.5x+3.1=.9x-0.1

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Solution for .5x+3.1=.9x-0.1 equation:


Simplifying
0.5x + 3.1 = 0.9x + -0.1

Reorder the terms:
3.1 + 0.5x = 0.9x + -0.1

Reorder the terms:
3.1 + 0.5x = -0.1 + 0.9x

Solving
3.1 + 0.5x = -0.1 + 0.9x

Solving for variable 'x'.

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

Add '-0.9x' to each side of the equation.
3.1 + 0.5x + -0.9x = -0.1 + 0.9x + -0.9x

Combine like terms: 0.5x + -0.9x = -0.4x
3.1 + -0.4x = -0.1 + 0.9x + -0.9x

Combine like terms: 0.9x + -0.9x = 0.0
3.1 + -0.4x = -0.1 + 0.0
3.1 + -0.4x = -0.1

Add '-3.1' to each side of the equation.
3.1 + -3.1 + -0.4x = -0.1 + -3.1

Combine like terms: 3.1 + -3.1 = 0.0
0.0 + -0.4x = -0.1 + -3.1
-0.4x = -0.1 + -3.1

Combine like terms: -0.1 + -3.1 = -3.2
-0.4x = -3.2

Divide each side by '-0.4'.
x = 8

Simplifying
x = 8

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