30=4x+-12

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Solution for 30=4x+-12 equation: 



30=4x+-12

We move all terms to the left:

30-(4x+-12)=0

We add all the numbers together, and all the variables

-(4x-12)+30=0

We get rid of parentheses

-4x+12+30=0

We add all the numbers together, and all the variables

-4x+42=0

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

-4x=-42

x=-42/-4

x=10+1/2

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