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erica [24]
4 years ago
12

How do I solve this?

Mathematics
1 answer:
ddd [48]4 years ago
8 0
Distribute
x-4x+7= 5x-x-21

Combine like terms
-3x+7= 4x-21

Add 21 to both sides
-3x+28=4x

Add 3x to both sides
28=7x

Divide both sides by 7
4=x

Final answer: x=4
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