0.4(3h-3.1)=12.8

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Solution for 0.4(3h-3.1)=12.8 equation: 


Simplifying
0.4(3h + -3.1) = 12.8

Reorder the terms:
0.4(-3.1 + 3h) = 12.8
(-3.1 * 0.4 + 3h * 0.4) = 12.8
(-1.24 + 1.2h) = 12.8

Solving
-1.24 + 1.2h = 12.8

Solving for variable 'h'.

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

Add '1.24' to each side of the equation.
-1.24 + 1.24 + 1.2h = 12.8 + 1.24

Combine like terms: -1.24 + 1.24 = 0.00
0.00 + 1.2h = 12.8 + 1.24
1.2h = 12.8 + 1.24

Combine like terms: 12.8 + 1.24 = 14.04
1.2h = 14.04

Divide each side by '1.2'.
h = 11.7

Simplifying
h = 11.7

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