3(-4+7x)=72

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Solution for 3(-4+7x)=72 equation: 



3(-4+7x)=72

We move all terms to the left:

3(-4+7x)-(72)=0

We add all the numbers together, and all the variables

3(7x-4)-72=0

We multiply parentheses

21x-12-72=0

We add all the numbers together, and all the variables

21x-84=0

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

21x=84

x=84/21

x=4

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