-0.5x+4.2=3.1

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Solution for -0.5x+4.2=3.1 equation: 


Simplifying
-0.5x + 4.2 = 3.1

Reorder the terms:
4.2 + -0.5x = 3.1

Solving
4.2 + -0.5x = 3.1

Solving for variable 'x'.

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

Add '-4.2' to each side of the equation.
4.2 + -4.2 + -0.5x = 3.1 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + -0.5x = 3.1 + -4.2
-0.5x = 3.1 + -4.2

Combine like terms: 3.1 + -4.2 = -1.1
-0.5x = -1.1

Divide each side by '-0.5'.
x = 2.2

Simplifying
x = 2.2

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