7x+18=-3x-12

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Solution for 7x+18=-3x-12 equation: 



7x+18=-3x-12

We move all terms to the left:

7x+18-(-3x-12)=0

We get rid of parentheses

7x+3x+12+18=0

We add all the numbers together, and all the variables

10x+30=0

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

10x=-30

x=-30/10

x=-3

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