-0.2(x+9)+0.4(x+9)=0.2x+1.8

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Solution for -0.2(x+9)+0.4(x+9)=0.2x+1.8 equation: 


Simplifying
-0.2(x + 9) + 0.4(x + 9) = 0.2x + 1.8

Reorder the terms:
-0.2(9 + x) + 0.4(x + 9) = 0.2x + 1.8
(9 * -0.2 + x * -0.2) + 0.4(x + 9) = 0.2x + 1.8
(-1.8 + -0.2x) + 0.4(x + 9) = 0.2x + 1.8

Reorder the terms:
-1.8 + -0.2x + 0.4(9 + x) = 0.2x + 1.8
-1.8 + -0.2x + (9 * 0.4 + x * 0.4) = 0.2x + 1.8
-1.8 + -0.2x + (3.6 + 0.4x) = 0.2x + 1.8

Reorder the terms:
-1.8 + 3.6 + -0.2x + 0.4x = 0.2x + 1.8

Combine like terms: -1.8 + 3.6 = 1.8
1.8 + -0.2x + 0.4x = 0.2x + 1.8

Combine like terms: -0.2x + 0.4x = 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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