13.5-x=21.8

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Solution for 13.5-x=21.8 equation: 


Simplifying
13.5 + -1x = 21.8

Solving
13.5 + -1x = 21.8

Solving for variable 'x'.

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

Add '-13.5' to each side of the equation.
13.5 + -13.5 + -1x = 21.8 + -13.5

Combine like terms: 13.5 + -13.5 = 0.0
0.0 + -1x = 21.8 + -13.5
-1x = 21.8 + -13.5

Combine like terms: 21.8 + -13.5 = 8.3
-1x = 8.3

Divide each side by '-1'.
x = -8.3

Simplifying
x = -8.3

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