-243=-15x+3(x-1)

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Solution for -243=-15x+3(x-1) equation: 



-243=-15x+3(x-1)

We move all terms to the left:

-243-(-15x+3(x-1))=0



We calculate terms in parentheses: -(-15x+3(x-1)), so:

-15x+3(x-1)

We multiply parentheses

-15x+3x-3

We add all the numbers together, and all the variables

-12x-3

Back to the equation:

-(-12x-3)



We get rid of parentheses

12x+3-243=0

We add all the numbers together, and all the variables

12x-240=0

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

12x=240

x=240/12

x=20

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