7(3+12x)=15

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Solution for 7(3+12x)=15 equation: 



7(3+12x)=15

We move all terms to the left:

7(3+12x)-(15)=0

We add all the numbers together, and all the variables

7(12x+3)-15=0

We multiply parentheses

84x+21-15=0

We add all the numbers together, and all the variables

84x+6=0

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

84x=-6

x=-6/84

x=-1/14

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