.4x-3.5=13.5

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Solution for .4x-3.5=13.5 equation: 


Simplifying
0.4x + -3.5 = 13.5

Reorder the terms:
-3.5 + 0.4x = 13.5

Solving
-3.5 + 0.4x = 13.5

Solving for variable 'x'.

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

Add '3.5' to each side of the equation.
-3.5 + 3.5 + 0.4x = 13.5 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + 0.4x = 13.5 + 3.5
0.4x = 13.5 + 3.5

Combine like terms: 13.5 + 3.5 = 17
0.4x = 17

Divide each side by '0.4'.
x = 42.5

Simplifying
x = 42.5

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