# math

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Can you check my work?
(4+16)- 20+7=
The answer is either 7 or -7?

• math -

4 + 16 = 20
20 + 7 = 27
27 - 20 = 7

• math -

The answer is 7...Always solve the numbers in the brackets first in any given equation. Then the 4+16 in the bracket will cancel out the -20 outside the bracket then you are left with 7!

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how would I check this on my own? I know you put numbers in the place of the letters but when I do that I come up with my moms answer. this is what i have when I check my work. p=-2 q=3 6*(-2)*3 =-36 but 3(-2)(-2*3)=36 could you tell