7x-4+x=20

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Solution for 7x-4+x=20 equation: 



7x-4+x=20

We move all terms to the left:

7x-4+x-(20)=0

We add all the numbers together, and all the variables

8x-24=0

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

8x=24

x=24/8

x=3

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