0.8=100-9.1(x-1.9)

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Solution for 0.8=100-9.1(x-1.9) equation: 


Simplifying
0.8 = 100 + -9.1(x + -1.9)

Reorder the terms:
0.8 = 100 + -9.1(-1.9 + x)
0.8 = 100 + (-1.9 * -9.1 + x * -9.1)
0.8 = 100 + (17.29 + -9.1x)

Combine like terms: 100 + 17.29 = 117.29
0.8 = 117.29 + -9.1x

Solving
0.8 = 117.29 + -9.1x

Solving for variable 'x'.

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

Add '9.1x' to each side of the equation.
0.8 + 9.1x = 117.29 + -9.1x + 9.1x

Combine like terms: -9.1x + 9.1x = 0.0
0.8 + 9.1x = 117.29 + 0.0
0.8 + 9.1x = 117.29

Add '-0.8' to each side of the equation.
0.8 + -0.8 + 9.1x = 117.29 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + 9.1x = 117.29 + -0.8
9.1x = 117.29 + -0.8

Combine like terms: 117.29 + -0.8 = 116.49
9.1x = 116.49

Divide each side by '9.1'.
x = 12.8010989

Simplifying
x = 12.8010989

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