7h+(90-h)=210

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


Simplifying
7h + (90 + -1h) = 210

Remove parenthesis around (90 + -1h)
7h + 90 + -1h = 210

Reorder the terms:
90 + 7h + -1h = 210

Combine like terms: 7h + -1h = 6h
90 + 6h = 210

Solving
90 + 6h = 210

Solving for variable 'h'.

Move all terms containing h to the left, all other terms to the right.

Add '-90' to each side of the equation.
90 + -90 + 6h = 210 + -90

Combine like terms: 90 + -90 = 0
0 + 6h = 210 + -90
6h = 210 + -90

Combine like terms: 210 + -90 = 120
6h = 120

Divide each side by '6'.
h = 20

Simplifying
h = 20

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