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

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



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

We move all terms to the left:

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



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

-x+3(x-5)

We add all the numbers together, and all the variables

-1x+3(x-5)

We multiply parentheses

-1x+3x-15

We add all the numbers together, and all the variables

2x-15

Back to the equation:

-(2x-15)



We get rid of parentheses

-2x+15-20=0

We add all the numbers together, and all the variables

-2x-5=0

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

-2x=5

x=5/-2

x=-2+1/2

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