12=4(h+20)

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Solution for 12=4(h+20) equation: 



12=4(h+20)

We move all terms to the left:

12-(4(h+20))=0



We calculate terms in parentheses: -(4(h+20)), so:

4(h+20)

We multiply parentheses

4h+80

Back to the equation:

-(4h+80)



We get rid of parentheses

-4h-80+12=0

We add all the numbers together, and all the variables

-4h-68=0

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

-4h=68

h=68/-4

h=-17

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