5x+12=2x-30

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Solution for 5x+12=2x-30 equation: 



5x+12=2x-30

We move all terms to the left:

5x+12-(2x-30)=0

We get rid of parentheses

5x-2x+30+12=0

We add all the numbers together, and all the variables

3x+42=0

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

3x=-42

x=-42/3

x=-14

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