0.9x-0.8(15-4x)=-0.1(x-6)

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Solution for 0.9x-0.8(15-4x)=-0.1(x-6) equation:


Simplifying
0.9x + -0.8(15 + -4x) = -0.1(x + -6)
0.9x + (15 * -0.8 + -4x * -0.8) = -0.1(x + -6)
0.9x + (-12 + 3.2x) = -0.1(x + -6)

Reorder the terms:
-12 + 0.9x + 3.2x = -0.1(x + -6)

Combine like terms: 0.9x + 3.2x = 4.1x
-12 + 4.1x = -0.1(x + -6)

Reorder the terms:
-12 + 4.1x = -0.1(-6 + x)
-12 + 4.1x = (-6 * -0.1 + x * -0.1)
-12 + 4.1x = (0.6 + -0.1x)

Solving
-12 + 4.1x = 0.6 + -0.1x

Solving for variable 'x'.

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

Add '0.1x' to each side of the equation.
-12 + 4.1x + 0.1x = 0.6 + -0.1x + 0.1x

Combine like terms: 4.1x + 0.1x = 4.2x
-12 + 4.2x = 0.6 + -0.1x + 0.1x

Combine like terms: -0.1x + 0.1x = 0.0
-12 + 4.2x = 0.6 + 0.0
-12 + 4.2x = 0.6

Add '12' to each side of the equation.
-12 + 12 + 4.2x = 0.6 + 12

Combine like terms: -12 + 12 = 0
0 + 4.2x = 0.6 + 12
4.2x = 0.6 + 12

Combine like terms: 0.6 + 12 = 12.6
4.2x = 12.6

Divide each side by '4.2'.
x = 3

Simplifying
x = 3

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