7x-8=5x-21=2x+3

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Solution for 7x-8=5x-21=2x+3 equation: 



7x-8=5x-21=2x+3

We move all terms to the left:

7x-8-(5x-21)=0

We get rid of parentheses

7x-5x+21-8=0

We add all the numbers together, and all the variables

2x+13=0

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

2x=-13

x=-13/2

x=-6+1/2

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