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Paul [167]
3 years ago
12

Add. Use models if needed. (-3x - 7) + (4x + 7)

Mathematics
2 answers:
Lunna [17]3 years ago
7 0

-3x-7+4x+7

Negative -7 and positive 7 will give you 0.

So we're left with x. Therefore, the answer is x.

iragen [17]3 years ago
4 0
(-3x-7)+(4x+7) = -3x-7+4x+7 = -3x+4x = x
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