0.4x-18=4.2x

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Solution for 0.4x-18=4.2x equation:


Simplifying
0.4x + -18 = 4.2x

Reorder the terms:
-18 + 0.4x = 4.2x

Solving
-18 + 0.4x = 4.2x

Solving for variable 'x'.

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

Add '-4.2x' to each side of the equation.
-18 + 0.4x + -4.2x = 4.2x + -4.2x

Combine like terms: 0.4x + -4.2x = -3.8x
-18 + -3.8x = 4.2x + -4.2x

Combine like terms: 4.2x + -4.2x = 0.0
-18 + -3.8x = 0.0

Add '18' to each side of the equation.
-18 + 18 + -3.8x = 0.0 + 18

Combine like terms: -18 + 18 = 0
0 + -3.8x = 0.0 + 18
-3.8x = 0.0 + 18

Combine like terms: 0.0 + 18 = 18
-3.8x = 18

Divide each side by '-3.8'.
x = -4.736842105

Simplifying
x = -4.736842105

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