-7x+8(-1-3x)=-225

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Solution for -7x+8(-1-3x)=-225 equation: 



-7x+8(-1-3x)=-225

We move all terms to the left:

-7x+8(-1-3x)-(-225)=0

We add all the numbers together, and all the variables

-7x+8(-3x-1)-(-225)=0

We add all the numbers together, and all the variables

-7x+8(-3x-1)+225=0

We multiply parentheses

-7x-24x-8+225=0

We add all the numbers together, and all the variables

-31x+217=0

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

-31x=-217

x=-217/-31

x=+7

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