-12=-3(1+5x)-3(5x+3)

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Solution for -12=-3(1+5x)-3(5x+3) equation: 



-12=-3(1+5x)-3(5x+3)

We move all terms to the left:

-12-(-3(1+5x)-3(5x+3))=0

We add all the numbers together, and all the variables

-(-3(5x+1)-3(5x+3))-12=0



We calculate terms in parentheses: -(-3(5x+1)-3(5x+3)), so:

-3(5x+1)-3(5x+3)

We multiply parentheses

-15x-15x-3-9

We add all the numbers together, and all the variables

-30x-12

Back to the equation:

-(-30x-12)



We get rid of parentheses

30x+12-12=0

We add all the numbers together, and all the variables

30x=0

x=0/30

x=0

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