7-5x=21+2x

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Solution for 7-5x=21+2x equation: 



7-5x=21+2x

We move all terms to the left:

7-5x-(21+2x)=0

We add all the numbers together, and all the variables

-5x-(2x+21)+7=0

We get rid of parentheses

-5x-2x-21+7=0

We add all the numbers together, and all the variables

-7x-14=0

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

-7x=14

x=14/-7

x=-2

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