3x-21=5x+75

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Solution for 3x-21=5x+75 equation: 



3x-21=5x+75

We move all terms to the left:

3x-21-(5x+75)=0

We get rid of parentheses

3x-5x-75-21=0

We add all the numbers together, and all the variables

-2x-96=0

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

-2x=96

x=96/-2

x=-48

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