Question

Could some one show me the proper way to do the following operation, I can't get the answer to match the Key.
5-3(8(7-9)+3-5(4-9))

Answer 1

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Answer 2

5-3(8(-2)+3-5(-5))

Answer 3

5-3(-16+3+25)

Answer 4

5-3(12)

Answer 5

5-36=-31

Answer 6

You need to follow the order of operations = PEMDAS which stands for:
Parenthesis
Exponents
Multiply
Divide
Add
Subtract

so partenthesis first (from left to right) which is 8(7-9) but there is another parthensis so lets do 7-9 first then another parthenesis is present so we solve that too which is 4-9 and you get
5-3(8(-2)+3-5(-5))
then you multiply the inside of the parthenesis
so the 8*-2 and the -5*-5 becomes -16 and 25
add those together with the three and you get 12 so it now looks like
5-3(12)
now that your done with parthenesis, you move down the list again to multiply
so now its 5-36
and then subtract which give -31

Answer 7

annon & kanade thanks for your help!