0.9x-0.2(18-2x)=-0.4(x-8)

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Solution for 0.9x-0.2(18-2x)=-0.4(x-8) equation:


Simplifying
0.9x + -0.2(18 + -2x) = -0.4(x + -8)
0.9x + (18 * -0.2 + -2x * -0.2) = -0.4(x + -8)
0.9x + (-3.6 + 0.4x) = -0.4(x + -8)

Reorder the terms:
-3.6 + 0.9x + 0.4x = -0.4(x + -8)

Combine like terms: 0.9x + 0.4x = 1.3x
-3.6 + 1.3x = -0.4(x + -8)

Reorder the terms:
-3.6 + 1.3x = -0.4(-8 + x)
-3.6 + 1.3x = (-8 * -0.4 + x * -0.4)
-3.6 + 1.3x = (3.2 + -0.4x)

Solving
-3.6 + 1.3x = 3.2 + -0.4x

Solving for variable 'x'.

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

Add '0.4x' to each side of the equation.
-3.6 + 1.3x + 0.4x = 3.2 + -0.4x + 0.4x

Combine like terms: 1.3x + 0.4x = 1.7x
-3.6 + 1.7x = 3.2 + -0.4x + 0.4x

Combine like terms: -0.4x + 0.4x = 0.0
-3.6 + 1.7x = 3.2 + 0.0
-3.6 + 1.7x = 3.2

Add '3.6' to each side of the equation.
-3.6 + 3.6 + 1.7x = 3.2 + 3.6

Combine like terms: -3.6 + 3.6 = 0.0
0.0 + 1.7x = 3.2 + 3.6
1.7x = 3.2 + 3.6

Combine like terms: 3.2 + 3.6 = 6.8
1.7x = 6.8

Divide each side by '1.7'.
x = 4

Simplifying
x = 4

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