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3 years ago

5

What makes the open sentence 7x - 7 = 2x + 8 true

2 answers:

lukranit [14]3 years ago

8 0

7x - 7 = 2x + 8

7x - 2x = 8 + 7

5x = 15

x = 3

Answer

C. X = 3

taurus [48]3 years ago

4 0

If we plug x = 3 into the equation we have

7(3) - 7 = 14

and

2(3) + 8 = 14

So the answer is C

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