2x-7=x-3=4x-21

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Solution for 2x-7=x-3=4x-21 equation: 



2x-7=x-3=4x-21

We move all terms to the left:

2x-7-(x-3)=0

We get rid of parentheses

2x-x+3-7=0

We add all the numbers together, and all the variables

x-4=0

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

x=4

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