21h-9=117

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Solution for 21h-9=117 equation: 



21h-9=117

We move all terms to the left:

21h-9-(117)=0

We add all the numbers together, and all the variables

21h-126=0

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

21h=126

h=126/21

h=6

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