3*(x+-4)=18

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Solution for 3*(x+-4)=18 equation: 



3(x+-4)=18

We move all terms to the left:

3(x+-4)-(18)=0

We add all the numbers together, and all the variables

3(x-4)-18=0

We multiply parentheses

3x-12-18=0

We add all the numbers together, and all the variables

3x-30=0

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

3x=30

x=30/3

x=10

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