12+h=-3(4-h)

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Solution for 12+h=-3(4-h) equation: 



12+h=-3(4-h)

We move all terms to the left:

12+h-(-3(4-h))=0

We add all the numbers together, and all the variables

h-(-3(-1h+4))+12=0



We calculate terms in parentheses: -(-3(-1h+4)), so:

-3(-1h+4)

We multiply parentheses

3h-12

Back to the equation:

-(3h-12)



We get rid of parentheses

h-3h+12+12=0

We add all the numbers together, and all the variables

-2h+24=0

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

-2h=-24

h=-24/-2

h=+12

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