0.4x=x-90

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Solution for 0.4x=x-90 equation: 


Simplifying
0.4x = x + -90

Reorder the terms:
0.4x = -90 + x

Solving
0.4x = -90 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
0.4x + -1x = -90 + x + -1x

Combine like terms: 0.4x + -1x = -0.6x
-0.6x = -90 + x + -1x

Combine like terms: x + -1x = 0
-0.6x = -90 + 0
-0.6x = -90

Divide each side by '-0.6'.
x = 150

Simplifying
x = 150

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