13h+20=20h-1

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Solution for 13h+20=20h-1 equation: 



13h+20=20h-1

We move all terms to the left:

13h+20-(20h-1)=0

We get rid of parentheses

13h-20h+1+20=0

We add all the numbers together, and all the variables

-7h+21=0

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

-7h=-21

h=-21/-7

h=+3

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