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If 2x + 7 = -21, what does 2 - x equal?
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If 2x + 7 = -21, what does 2 - x equal?

User SebastianH
by
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2 Answers

4 votes

Answer:

12.5

Explanation:

2x+7=-21

2x+7-7=-21-7

2x=-28

2x/2=-28/2

x=-14

2-x=?

2-(-14)

2+14=16

Hope this helped!

User Nicolas Del Valle
by
4.5k points
0 votes

Answer:

16

Explanation:

First, we solve for x.


2x+7=-21\\2x=-28\\x=-14

We now evaluate 2-x, plugging in -14 for x.


2-x\\2-(-14)\\2+14\\16

User Htxryan
by
4.1k points
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