-12+42=-3(x+5)

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Solution for -12+42=-3(x+5) equation: 



-12+42=-3(x+5)

We move all terms to the left:

-12+42-(-3(x+5))=0

We add all the numbers together, and all the variables

-(-3(x+5))+30=0



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

-3(x+5)

We multiply parentheses

-3x-15

Back to the equation:

-(-3x-15)



We get rid of parentheses

3x+15+30=0

We add all the numbers together, and all the variables

3x+45=0

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

3x=-45

x=-45/3

x=-15

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