0.7(x-9)-0.9(x-9)=-0.2x+1.8

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Solution for 0.7(x-9)-0.9(x-9)=-0.2x+1.8 equation: 


Simplifying
0.7(x + -9) + -0.9(x + -9) = -0.2x + 1.8

Reorder the terms:
0.7(-9 + x) + -0.9(x + -9) = -0.2x + 1.8
(-9 * 0.7 + x * 0.7) + -0.9(x + -9) = -0.2x + 1.8
(-6.3 + 0.7x) + -0.9(x + -9) = -0.2x + 1.8

Reorder the terms:
-6.3 + 0.7x + -0.9(-9 + x) = -0.2x + 1.8
-6.3 + 0.7x + (-9 * -0.9 + x * -0.9) = -0.2x + 1.8
-6.3 + 0.7x + (8.1 + -0.9x) = -0.2x + 1.8

Reorder the terms:
-6.3 + 8.1 + 0.7x + -0.9x = -0.2x + 1.8

Combine like terms: -6.3 + 8.1 = 1.8
1.8 + 0.7x + -0.9x = -0.2x + 1.8

Combine like terms: 0.7x + -0.9x = -0.2x
1.8 + -0.2x = -0.2x + 1.8

Reorder the terms:
1.8 + -0.2x = 1.8 + -0.2x

Add '-1.8' to each side of the equation.
1.8 + -1.8 + -0.2x = 1.8 + -1.8 + -0.2x

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + -0.2x = 1.8 + -1.8 + -0.2x
-0.2x = 1.8 + -1.8 + -0.2x

Combine like terms: 1.8 + -1.8 = 0.0
-0.2x = 0.0 + -0.2x
-0.2x = -0.2x

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

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

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

Solving
0.0 = 0.0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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