7x+12.4=5x-7.8

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Solution for 7x+12.4=5x-7.8 equation:


Simplifying
7x + 12.4 = 5x + -7.8

Reorder the terms:
12.4 + 7x = 5x + -7.8

Reorder the terms:
12.4 + 7x = -7.8 + 5x

Solving
12.4 + 7x = -7.8 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
12.4 + 7x + -5x = -7.8 + 5x + -5x

Combine like terms: 7x + -5x = 2x
12.4 + 2x = -7.8 + 5x + -5x

Combine like terms: 5x + -5x = 0
12.4 + 2x = -7.8 + 0
12.4 + 2x = -7.8

Add '-12.4' to each side of the equation.
12.4 + -12.4 + 2x = -7.8 + -12.4

Combine like terms: 12.4 + -12.4 = 0.0
0.0 + 2x = -7.8 + -12.4
2x = -7.8 + -12.4

Combine like terms: -7.8 + -12.4 = -20.2
2x = -20.2

Divide each side by '2'.
x = -10.1

Simplifying
x = -10.1

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