Remember your rules of precedence:
First, the stuff in the ( ). This adds to 12
Now you have two multiplications after which the products are subtracted. In numbers, this is 60-12, for which the answer is 48.
2007-06-28 16:07:30
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answer #1
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answered by cattbarf 7
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follow this order of operations:
Parenthesis: evaluate all expressions inside parenthesis first.
Exponents: Evaluate all exponents (you dont have any)
Multiplication/Division: Evaluate any mult or div from left to right.
Addition/subtraction: Evaluate all addition and subtraction from left to right.
5(9+3) - 3 * 4
5 * 12 - 3 * 4 (I did the parenthesis first 9 + 3 = 12)
60 - 12 (I multiplied 5 * 12 = 60 and 3 * 4 = 12)
you do the rest.
2007-06-28 16:09:52
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answer #2
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answered by Jimmy 3
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Order of operations - PEMDAS (Please Excuse My Dear Aunt Sally)
you do whatever's in Parenthesis first,
then Exponents (powers),
then Multiplication
and Division,
then Addition
and Subtraction.
So first, add the 9 and the 3 for 12. Now it's 5*12 - 3*4. No exponents, do the multiplications. That gives you 60 - 12. So, it's 48.
2007-06-28 16:09:51
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answer #3
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answered by Carl L 4
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5(9+3)-3*4
= 5(12)-3*4
= 60-3*4
= 60-12
= 48
2007-06-28 16:43:24
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answer #4
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answered by Kemmy 6
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PEMDAS(Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction)
48
2007-06-28 16:09:33
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answer #5
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answered by Sky Guy 5
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= (5 x 12) - (3 x 4)
= 60 - 12
= 48
2007-07-02 08:05:58
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answer #6
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answered by Como 7
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you have to evaluate that problem in this order~
P~ paranthesis (spelling?)
E~ exponents
M~ multiplication
D~ division
A~ addition
S~ subtraction
except multiplication and division can be switched around judging on which comes first and same for subtraction and addition. to remember the acronym easily use this jingle ^.^ ~
P~ please
E~ excuse
M~ My
D~ dear
A~ aunt
S~ sally
then all you have to do is break it down! ~
5(9+3)-3*4
9+3=12
5*12=60
3*4=12
60-12= 48! ^O^
2007-06-28 16:24:43
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answer #7
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answered by Anonymous
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There are rules of hierarchy on resolving a complex mathematical expression.
First, resolve anything within parenthesis ( )
Next, resolve powers and roots,
Next, resolve multiplication and division,
Last, resolve addition and subraction.
5(9+3)-3*4
5(12)-3*4
5*12-12
60-12
48
I love asking people "how much is 1 plus 2 times 3", they often answer 9 which is wrong. resolve 2*3 first, then add 1.
2007-06-28 16:12:25
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answer #8
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answered by TechnoStuff 4
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Let us restate the expression:
(5 * [9 + 3]) - (3 * 4)
Simplifications:
(5 * 12) - 12
60 - 12
48
2007-07-02 15:39:09
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answer #9
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answered by Jun Agruda 7
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48
2007-06-28 16:32:39
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answer #10
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answered by Anonymous
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