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3 votes
How do I solve this?

How do I solve this?-example-1

1 Answer

4 votes
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
User Sylvain GIROD
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