21=-6(5-h)

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Solution for 21=-6(5-h) equation: 



21=-6(5-h)

We move all terms to the left:

21-(-6(5-h))=0

We add all the numbers together, and all the variables

-(-6(-1h+5))+21=0



We calculate terms in parentheses: -(-6(-1h+5)), so:

-6(-1h+5)

We multiply parentheses

6h-30

Back to the equation:

-(6h-30)



We get rid of parentheses

-6h+30+21=0

We add all the numbers together, and all the variables

-6h+51=0

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

-6h=-51

h=-51/-6

h=8+1/2

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