7h+(90-9h)=210

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Solution for 7h+(90-9h)=210 equation: 



7h+(90-9h)=210

We move all terms to the left:

7h+(90-9h)-(210)=0

We add all the numbers together, and all the variables

7h+(-9h+90)-210=0

We get rid of parentheses

7h-9h+90-210=0

We add all the numbers together, and all the variables

-2h-120=0

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

-2h=120

h=120/-2

h=-60

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