8.1=9.9-0.2x

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Solution for 8.1=9.9-0.2x equation:


Simplifying
8.1 = 9.9 + -0.2x

Solving
8.1 = 9.9 + -0.2x

Solving for variable 'x'.

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

Add '0.2x' to each side of the equation.
8.1 + 0.2x = 9.9 + -0.2x + 0.2x

Combine like terms: -0.2x + 0.2x = 0.0
8.1 + 0.2x = 9.9 + 0.0
8.1 + 0.2x = 9.9

Add '-8.1' to each side of the equation.
8.1 + -8.1 + 0.2x = 9.9 + -8.1

Combine like terms: 8.1 + -8.1 = 0.0
0.0 + 0.2x = 9.9 + -8.1
0.2x = 9.9 + -8.1

Combine like terms: 9.9 + -8.1 = 1.8
0.2x = 1.8

Divide each side by '0.2'.
x = 9

Simplifying
x = 9

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