31-7x=20+4x

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



31-7x=20+4x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

-11x+11=0

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

-11x=-11

x=-11/-11

x=1

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