0.3x+2.8=0.8x-1.2

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Solution for 0.3x+2.8=0.8x-1.2 equation: 


Simplifying
0.3x + 2.8 = 0.8x + -1.2

Reorder the terms:
2.8 + 0.3x = 0.8x + -1.2

Reorder the terms:
2.8 + 0.3x = -1.2 + 0.8x

Solving
2.8 + 0.3x = -1.2 + 0.8x

Solving for variable 'x'.

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

Add '-0.8x' to each side of the equation.
2.8 + 0.3x + -0.8x = -1.2 + 0.8x + -0.8x

Combine like terms: 0.3x + -0.8x = -0.5x
2.8 + -0.5x = -1.2 + 0.8x + -0.8x

Combine like terms: 0.8x + -0.8x = 0.0
2.8 + -0.5x = -1.2 + 0.0
2.8 + -0.5x = -1.2

Add '-2.8' to each side of the equation.
2.8 + -2.8 + -0.5x = -1.2 + -2.8

Combine like terms: 2.8 + -2.8 = 0.0
0.0 + -0.5x = -1.2 + -2.8
-0.5x = -1.2 + -2.8

Combine like terms: -1.2 + -2.8 = -4
-0.5x = -4

Divide each side by '-0.5'.
x = 8

Simplifying
x = 8

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