21+15h=28-2h

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Solution for 21+15h=28-2h equation: 



21+15h=28-2h

We move all terms to the left:

21+15h-(28-2h)=0

We add all the numbers together, and all the variables

15h-(-2h+28)+21=0

We get rid of parentheses

15h+2h-28+21=0

We add all the numbers together, and all the variables

17h-7=0

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

17h=7

h=7/17

h=7/17

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