8-1x=9+4x

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Solution for 8-1x=9+4x equation:


Simplifying
8 + -1x = 9 + 4x

Solving
8 + -1x = 9 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
8 + -1x + -4x = 9 + 4x + -4x

Combine like terms: -1x + -4x = -5x
8 + -5x = 9 + 4x + -4x

Combine like terms: 4x + -4x = 0
8 + -5x = 9 + 0
8 + -5x = 9

Add '-8' to each side of the equation.
8 + -8 + -5x = 9 + -8

Combine like terms: 8 + -8 = 0
0 + -5x = 9 + -8
-5x = 9 + -8

Combine like terms: 9 + -8 = 1
-5x = 1

Divide each side by '-5'.
x = -0.2

Simplifying
x = -0.2

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