4x-8=3x-21

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Solution for 4x-8=3x-21 equation: 



4x-8=3x-21

We move all terms to the left:

4x-8-(3x-21)=0

We get rid of parentheses

4x-3x+21-8=0

We add all the numbers together, and all the variables

x+13=0

We move all terms containing x to the left, all other terms to the right

x=-13

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