5-21=3x+7

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Solution for 5-21=3x+7 equation: 



5-21=3x+7

We move all terms to the left:

5-21-(3x+7)=0

We add all the numbers together, and all the variables

-(3x+7)-16=0

We get rid of parentheses

-3x-7-16=0

We add all the numbers together, and all the variables

-3x-23=0

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

-3x=23

x=23/-3

x=-7+2/3

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