21x+7=17x-31

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Solution for 21x+7=17x-31 equation: 



21x+7=17x-31

We move all terms to the left:

21x+7-(17x-31)=0

We get rid of parentheses

21x-17x+31+7=0

We add all the numbers together, and all the variables

4x+38=0

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

4x=-38

x=-38/4

x=-9+1/2

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