8+3x=-31

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Solution for 8+3x=-31 equation: 



8+3x=-31

We move all terms to the left:

8+3x-(-31)=0

We add all the numbers together, and all the variables

3x+39=0

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

3x=-39

x=-39/3

x=-13

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