21+29=3x-7

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Solution for 21+29=3x-7 equation: 



21+29=3x-7

We move all terms to the left:

21+29-(3x-7)=0

We add all the numbers together, and all the variables

-(3x-7)+50=0

We get rid of parentheses

-3x+7+50=0

We add all the numbers together, and all the variables

-3x+57=0

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

-3x=-57

x=-57/-3

x=+19

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