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Evaluate the expression.
105 - 45 ÷ 15 + 6

A. 96

B. 108

C. -15

D. -48

2007-07-27 07:56:51 · 9 answers · asked by Anonymous in Science & Mathematics Mathematics

9 answers

105 - (45 ÷ 15) + 6

105 - (3) + 6

Remove parenthesis

105 - 3 + 6

102 + 6

108

- - - - - - - -s-

2007-07-27 08:26:55 · answer #1 · answered by SAMUEL D 7 · 0 0

For this you have to take into account the order of operations. Division comes before adding and subtracting so 45/15 = 3. Now the equation reads 105 - 3 + 6. Then -3 + 6 = 3. Then 105 + 3 = 108. So the answer is B.

2007-07-27 15:03:47 · answer #2 · answered by eri 2 · 0 0

Order of operations:
Do division and multiplication first then addition and subtraction

105 - 45 ÷ 15 + 6
= 105 - 3 + 6
= 102 + 6
= 108

2007-07-27 15:02:10 · answer #3 · answered by whitesox09 7 · 1 0

for such a question always use the word BODMAS
(Brackets, Order, Division, Multiplication, Addition, Subtraction) which is the order in which you calculate an expression.
Hence the answer is
105 - 45 / 15 + 6
= 105 - 3 + 6
= 105 + 3
= B. 108

2007-07-27 15:06:46 · answer #4 · answered by Nayan B 1 · 1 0

The rules for order of operations are: PEMDAS
1) Parentheses
2) Exponentials
3) Multiplication / Division
4) Addition / Subtraction

Thus in 105 - 45 / 15 + 6
we must do the division first
105 - 3 + 6
and now we can add and subtract from left to right:
102 + 6 = 108
Option B

2007-07-27 15:03:07 · answer #5 · answered by MathProf 4 · 1 0

the answer is 96.
we go by bodmas rule (by, of, division, multiplication, addition, subtraction)
so it will be
1)100 - (45/15) +6 = 100 - 3 +6
2) 100 - (3+6) = 100 -9
3) 100 - 9 =96

2007-07-27 15:56:17 · answer #6 · answered by Anonymous · 0 0

the answer is B.108
remember the order of operations
bedmas
brackets exponents division multiplication addition and subtraction
if you follow this order...it will work
so 45/15 is 3
105 -3 is 102
102 + 6 is 108
Whenever you have opposite things like addition/subtraction or multiplication/division you do them from left to right

2007-07-27 15:09:00 · answer #7 · answered by Anonymous · 0 0

check to see if you copied the problem correctly because none of the answers are correct.

2007-07-27 15:09:10 · answer #8 · answered by Ed S 4 · 0 0

I WAS TOLD TO USE THE PHRASE
PLEASE EXCUSE MY DEAR AUNT SALLY
MEANING
PARENTHESIS
(FORGOT WHAT E STOOD FOR)
MULTIPLY
DIVISION
ADD
SUBTRACT
(M AND D ANY ORDER)(A AND S ANY ORDER)

45 DIVIDED BY 15
105-3+6
102+6
108
ANSWER B

2007-07-31 14:26:18 · answer #9 · answered by weeeelilbit 1 · 0 0

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