h+(h+2)=20

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Solution for h+(h+2)=20 equation: 



h+(h+2)=20

We move all terms to the left:

h+(h+2)-(20)=0

We get rid of parentheses

h+h+2-20=0

We add all the numbers together, and all the variables

2h-18=0

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

2h=18

h=18/2

h=9

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