2h+(h-3)=12

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Solution for 2h+(h-3)=12 equation: 



2h+(h-3)=12

We move all terms to the left:

2h+(h-3)-(12)=0

We get rid of parentheses

2h+h-3-12=0

We add all the numbers together, and all the variables

3h-15=0

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

3h=15

h=15/3

h=5

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