81x-4(3-20x)=-5(x+3)

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Solution for 81x-4(3-20x)=-5(x+3) equation: 



81x-4(3-20x)=-5(x+3)

We move all terms to the left:

81x-4(3-20x)-(-5(x+3))=0

We add all the numbers together, and all the variables

81x-4(-20x+3)-(-5(x+3))=0

We multiply parentheses

81x+80x-(-5(x+3))-12=0



We calculate terms in parentheses: -(-5(x+3)), so:

-5(x+3)

We multiply parentheses

-5x-15

Back to the equation:

-(-5x-15)



We add all the numbers together, and all the variables

161x-(-5x-15)-12=0

We get rid of parentheses

161x+5x+15-12=0

We add all the numbers together, and all the variables

166x+3=0

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

166x=-3

x=-3/166

x=-3/166

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