7.8+2(0.7m+0.4)=6.4m+4(0.5m-0.8)

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Solution for 7.8+2(0.7m+0.4)=6.4m+4(0.5m-0.8) equation:


Simplifying
7.8 + 2(0.7m + 0.4) = 6.4m + 4(0.5m + -0.8)

Reorder the terms:
7.8 + 2(0.4 + 0.7m) = 6.4m + 4(0.5m + -0.8)
7.8 + (0.4 * 2 + 0.7m * 2) = 6.4m + 4(0.5m + -0.8)
7.8 + (0.8 + 1.4m) = 6.4m + 4(0.5m + -0.8)

Combine like terms: 7.8 + 0.8 = 8.6
8.6 + 1.4m = 6.4m + 4(0.5m + -0.8)

Reorder the terms:
8.6 + 1.4m = 6.4m + 4(-0.8 + 0.5m)
8.6 + 1.4m = 6.4m + (-0.8 * 4 + 0.5m * 4)
8.6 + 1.4m = 6.4m + (-3.2 + 2m)

Reorder the terms:
8.6 + 1.4m = -3.2 + 6.4m + 2m

Combine like terms: 6.4m + 2m = 8.4m
8.6 + 1.4m = -3.2 + 8.4m

Solving
8.6 + 1.4m = -3.2 + 8.4m

Solving for variable 'm'.

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

Add '-8.4m' to each side of the equation.
8.6 + 1.4m + -8.4m = -3.2 + 8.4m + -8.4m

Combine like terms: 1.4m + -8.4m = -7m
8.6 + -7m = -3.2 + 8.4m + -8.4m

Combine like terms: 8.4m + -8.4m = 0.0
8.6 + -7m = -3.2 + 0.0
8.6 + -7m = -3.2

Add '-8.6' to each side of the equation.
8.6 + -8.6 + -7m = -3.2 + -8.6

Combine like terms: 8.6 + -8.6 = 0.0
0.0 + -7m = -3.2 + -8.6
-7m = -3.2 + -8.6

Combine like terms: -3.2 + -8.6 = -11.8
-7m = -11.8

Divide each side by '-7'.
m = 1.685714286

Simplifying
m = 1.685714286

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