4x+4=x+21

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



4x+4=x+21

We move all terms to the left:

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

We get rid of parentheses

4x-x-21+4=0

We add all the numbers together, and all the variables

3x-17=0

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

3x=17

x=17/3

x=5+2/3

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