8.3=9.9-0.8x

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Solution for 8.3=9.9-0.8x equation:


Simplifying
8.3 = 9.9 + -0.8x

Solving
8.3 = 9.9 + -0.8x

Solving for variable 'x'.

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

Add '0.8x' to each side of the equation.
8.3 + 0.8x = 9.9 + -0.8x + 0.8x

Combine like terms: -0.8x + 0.8x = 0.0
8.3 + 0.8x = 9.9 + 0.0
8.3 + 0.8x = 9.9

Add '-8.3' to each side of the equation.
8.3 + -8.3 + 0.8x = 9.9 + -8.3

Combine like terms: 8.3 + -8.3 = 0.0
0.0 + 0.8x = 9.9 + -8.3
0.8x = 9.9 + -8.3

Combine like terms: 9.9 + -8.3 = 1.6
0.8x = 1.6

Divide each side by '0.8'.
x = 2

Simplifying
x = 2

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