81.4=2(4*5+h*5+4*h)

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Solution for 81.4=2(4*5+h*5+4*h) equation:


Simplifying
81.4 = 2(4 * 5 + h * 5 + 4h)

Multiply 4 * 5
81.4 = 2(20 + h * 5 + 4h)

Reorder the terms for easier multiplication:
81.4 = 2(20 + 5h + 4h)

Combine like terms: 5h + 4h = 9h
81.4 = 2(20 + 9h)
81.4 = (20 * 2 + 9h * 2)
81.4 = (40 + 18h)

Solving
81.4 = 40 + 18h

Solving for variable 'h'.

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

Add '-18h' to each side of the equation.
81.4 + -18h = 40 + 18h + -18h

Combine like terms: 18h + -18h = 0
81.4 + -18h = 40 + 0
81.4 + -18h = 40

Add '-81.4' to each side of the equation.
81.4 + -81.4 + -18h = 40 + -81.4

Combine like terms: 81.4 + -81.4 = 0.0
0.0 + -18h = 40 + -81.4
-18h = 40 + -81.4

Combine like terms: 40 + -81.4 = -41.4
-18h = -41.4

Divide each side by '-18'.
h = 2.3

Simplifying
h = 2.3

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