0.5+7.2=0.4x-18.9

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Solution for 0.5+7.2=0.4x-18.9 equation: 


Simplifying
0.5 + 7.2 = 0.4x + -18.9

Combine like terms: 0.5 + 7.2 = 7.7
7.7 = 0.4x + -18.9

Reorder the terms:
7.7 = -18.9 + 0.4x

Solving
7.7 = -18.9 + 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
7.7 + -0.4x = -18.9 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
7.7 + -0.4x = -18.9 + 0.0
7.7 + -0.4x = -18.9

Add '-7.7' to each side of the equation.
7.7 + -7.7 + -0.4x = -18.9 + -7.7

Combine like terms: 7.7 + -7.7 = 0.0
0.0 + -0.4x = -18.9 + -7.7
-0.4x = -18.9 + -7.7

Combine like terms: -18.9 + -7.7 = -26.6
-0.4x = -26.6

Divide each side by '-0.4'.
x = 66.5

Simplifying
x = 66.5

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