0.3x-1.8-0.7x=1.2

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Solution for 0.3x-1.8-0.7x=1.2 equation: 


Simplifying
0.3x + -1.8 + -0.7x = 1.2

Reorder the terms:
-1.8 + 0.3x + -0.7x = 1.2

Combine like terms: 0.3x + -0.7x = -0.4x
-1.8 + -0.4x = 1.2

Solving
-1.8 + -0.4x = 1.2

Solving for variable 'x'.

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

Add '1.8' to each side of the equation.
-1.8 + 1.8 + -0.4x = 1.2 + 1.8

Combine like terms: -1.8 + 1.8 = 0.0
0.0 + -0.4x = 1.2 + 1.8
-0.4x = 1.2 + 1.8

Combine like terms: 1.2 + 1.8 = 3
-0.4x = 3

Divide each side by '-0.4'.
x = -7.5

Simplifying
x = -7.5

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