21+20h=42+40h

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Solution for 21+20h=42+40h equation: 



21+20h=42+40h

We move all terms to the left:

21+20h-(42+40h)=0

We add all the numbers together, and all the variables

20h-(40h+42)+21=0

We get rid of parentheses

20h-40h-42+21=0

We add all the numbers together, and all the variables

-20h-21=0

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

-20h=21

h=21/-20

h=-1+1/20

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