4x+30=x-21

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Solution for 4x+30=x-21 equation: 



4x+30=x-21

We move all terms to the left:

4x+30-(x-21)=0

We get rid of parentheses

4x-x+21+30=0

We add all the numbers together, and all the variables

3x+51=0

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

3x=-51

x=-51/3

x=-17

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