4x+6-x=-2x+21

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Solution for 4x+6-x=-2x+21 equation: 



4x+6-x=-2x+21

We move all terms to the left:

4x+6-x-(-2x+21)=0

We add all the numbers together, and all the variables

3x-(-2x+21)+6=0

We get rid of parentheses

3x+2x-21+6=0

We add all the numbers together, and all the variables

5x-15=0

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

5x=15

x=15/5

x=3

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