3x+20=4x=7

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Solution for 3x+20=4x=7 equation: 



3x+20=4x=7

We move all terms to the left:

3x+20-(4x)=0

We add all the numbers together, and all the variables

-1x+20=0

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

-x=-20

x=-20/-1

x=+20

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