13.7-4.7=9.9+8.1x

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Solution for 13.7-4.7=9.9+8.1x equation: 


Simplifying
13.7 + -4.7 = 9.9 + 8.1x

Combine like terms: 13.7 + -4.7 = 9
9 = 9.9 + 8.1x

Solving
9 = 9.9 + 8.1x

Solving for variable 'x'.

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

Add '-8.1x' to each side of the equation.
9 + -8.1x = 9.9 + 8.1x + -8.1x

Combine like terms: 8.1x + -8.1x = 0.0
9 + -8.1x = 9.9 + 0.0
9 + -8.1x = 9.9

Add '-9' to each side of the equation.
9 + -9 + -8.1x = 9.9 + -9

Combine like terms: 9 + -9 = 0
0 + -8.1x = 9.9 + -9
-8.1x = 9.9 + -9

Combine like terms: 9.9 + -9 = 0.9
-8.1x = 0.9

Divide each side by '-8.1'.
x = -0.1111111111

Simplifying
x = -0.1111111111

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