5x-7=21+3x

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



5x-7=21+3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

5x-3x-21-7=0

We add all the numbers together, and all the variables

2x-28=0

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

2x=28

x=28/2

x=14

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