Question

Simplify and find the value at x = -5, y = 2 and a = 7.
a. -x-[x+{x+y-2x-(x-2y)} - y]
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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

28

Step-by-step explanation:

x=-5,y=2,a=7

7-5[-5+{-5+2-2×(-5)-(-5-2×2)}-2]

2[-10+0-4]

-20+0-8

=28

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