7x-3-4x=4x+21-4x

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



7x-3-4x=4x+21-4x

We move all terms to the left:

7x-3-4x-(4x+21-4x)=0

We add all the numbers together, and all the variables

7x-4x-3-21=0

We add all the numbers together, and all the variables

3x-24=0

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

3x=24

x=24/3

x=8

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