7x-20=4x+31

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Solution for 7x-20=4x+31 equation: 



7x-20=4x+31

We move all terms to the left:

7x-20-(4x+31)=0

We get rid of parentheses

7x-4x-31-20=0

We add all the numbers together, and all the variables

3x-51=0

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

3x=51

x=51/3

x=17

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