30-h-2(6+h)=0

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Solution for 30-h-2(6+h)=0 equation: 


Simplifying
30 + -1h + -2(6 + h) = 0
30 + -1h + (6 * -2 + h * -2) = 0
30 + -1h + (-12 + -2h) = 0

Reorder the terms:
30 + -12 + -1h + -2h = 0

Combine like terms: 30 + -12 = 18
18 + -1h + -2h = 0

Combine like terms: -1h + -2h = -3h
18 + -3h = 0

Solving
18 + -3h = 0

Solving for variable 'h'.

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

Add '-18' to each side of the equation.
18 + -18 + -3h = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -3h = 0 + -18
-3h = 0 + -18

Combine like terms: 0 + -18 = -18
-3h = -18

Divide each side by '-3'.
h = 6

Simplifying
h = 6

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