-3(-1+7x)=-144

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Solution for -3(-1+7x)=-144 equation: 



-3(-1+7x)=-144

We move all terms to the left:

-3(-1+7x)-(-144)=0

We add all the numbers together, and all the variables

-3(7x-1)-(-144)=0

We add all the numbers together, and all the variables

-3(7x-1)+144=0

We multiply parentheses

-21x+3+144=0

We add all the numbers together, and all the variables

-21x+147=0

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

-21x=-147

x=-147/-21

x=+7

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