thanks so much to those that answered my question. (unfortunatly im a little slow at math and i dont understand anything without an explanation.)
MY NEW QUESTION
When theres a problem inside the paranthesis are you supposed to change the answer to its opposite integer?
example:
(3-7) - (9-12)
Would it be
-4 + 23?
2006-09-18 16:03:41 · 11 answers · asked by Anonymous in Education & Reference ➔ Homework Help
9-12 = -3, and yes you would change the sign, so it would be (-4)+(3). =-1
2006-09-18 16:08:46 · answer #1 · answered by BMac 3 · 0⤊ 0⤋
There's two ways to do this.
First, solve the innermost parenthesis first and then work out from there.
(3-7) - (9-12)
3-7 is -4 and 9 - 12 is - 3
-4 - -3
Subtracting a negative gives you a positive. (e.g., getting rid of a three dollar debt is just as good as earning three dollars. Either way, you're three dollars ahead.)
-4 + 3 = -1
The other way is to use the fact that multiplication is distributive.
(3 - 7) - (9 - 12)
(3 -7) + (-9 + 12)
[I took the -1 from the outside of the parenthesis and moved inside by mutliplying both 9 and -12 by -1. x(y + z) = xy +xz ]
(-4) + (3)
-4 + 3 = -1
For this problem, it's easier to use innermost parenthesis first method. Later, in alegbra, you'll run into trickier problems where you will have to distribute.
2006-09-18 23:17:17 · answer #2 · answered by yetanotheronlinename 2 · 1⤊ 0⤋
solve the numbers inside the parenthesis first
(3-7) - (9-12) =n
( -4) - (-3) =n
(-4) + (3) = n negative x negative = + that is why 3 became +
-1 = n
2006-09-18 23:16:02 · answer #3 · answered by Pam 1 · 0⤊ 0⤋
I can see that you have different answers to choose from. Go with the answers which have you do the operations inside parentheses first. Then look at signs .
( -4 ) - ( -3) = -4 + 3= -1
The answers that end up with -1 are the answers you need to look at to help you understand the process. Hang in there and keep asking questions.
2006-09-18 23:20:25 · answer #4 · answered by bizime 7 · 0⤊ 0⤋
no. It would be worked out like this:
(-4) - (-3)
Then you would change the - to a + and the -3 to a positive 3.. it would then look like this:
-4+3= -1
hope that helps any
2006-09-18 23:13:57 · answer #5 · answered by vickie 3 · 0⤊ 0⤋
It is -4 + 3 so it equals -1.
2006-09-18 23:22:12 · answer #6 · answered by silentcargo 3 · 0⤊ 0⤋
this is so easy you cant do math Jesus....
(3-7)-(9-12)
-4--3
kcc=it means keep change change if your not in high school or higher you wont know what it is so this wont be valid to you
-4--3
-4+3
-1 that simple
2006-09-18 23:12:43 · answer #7 · answered by em344 1 · 0⤊ 0⤋
do the parenthesis first so:
(-4)-(-3)
now change the one after the - :
(-4)+3 = -1
2006-09-18 23:05:53 · answer #8 · answered by kd36 2 · 0⤊ 0⤋
you got it half right.
the second part:
-(9-12), should be -3 first
then negative negative, becomes a positive and therefore
-4+3 += -1
2006-09-18 23:07:53 · answer #9 · answered by rice girl 3 · 0⤊ 0⤋
Yes, thats right! great job!
2006-09-18 23:08:02 · answer #10 · answered by darrenrom9071 2 · 0⤊ 0⤋