7x+9=2x-31

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Solution for 7x+9=2x-31 equation: 



7x+9=2x-31

We move all terms to the left:

7x+9-(2x-31)=0

We get rid of parentheses

7x-2x+31+9=0

We add all the numbers together, and all the variables

5x+40=0

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

5x=-40

x=-40/5

x=-8

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