7h-12=9h+8

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Solution for 7h-12=9h+8 equation: 



7h-12=9h+8

We move all terms to the left:

7h-12-(9h+8)=0

We get rid of parentheses

7h-9h-8-12=0

We add all the numbers together, and all the variables

-2h-20=0

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

-2h=20

h=20/-2

h=-10

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