0.9x-0.3(20-2x)=-0.7(x-4)

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Solution for 0.9x-0.3(20-2x)=-0.7(x-4) equation:


Simplifying
0.9x + -0.3(20 + -2x) = -0.7(x + -4)
0.9x + (20 * -0.3 + -2x * -0.3) = -0.7(x + -4)
0.9x + (-6 + 0.6x) = -0.7(x + -4)

Reorder the terms:
-6 + 0.9x + 0.6x = -0.7(x + -4)

Combine like terms: 0.9x + 0.6x = 1.5x
-6 + 1.5x = -0.7(x + -4)

Reorder the terms:
-6 + 1.5x = -0.7(-4 + x)
-6 + 1.5x = (-4 * -0.7 + x * -0.7)
-6 + 1.5x = (2.8 + -0.7x)

Solving
-6 + 1.5x = 2.8 + -0.7x

Solving for variable 'x'.

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

Add '0.7x' to each side of the equation.
-6 + 1.5x + 0.7x = 2.8 + -0.7x + 0.7x

Combine like terms: 1.5x + 0.7x = 2.2x
-6 + 2.2x = 2.8 + -0.7x + 0.7x

Combine like terms: -0.7x + 0.7x = 0.0
-6 + 2.2x = 2.8 + 0.0
-6 + 2.2x = 2.8

Add '6' to each side of the equation.
-6 + 6 + 2.2x = 2.8 + 6

Combine like terms: -6 + 6 = 0
0 + 2.2x = 2.8 + 6
2.2x = 2.8 + 6

Combine like terms: 2.8 + 6 = 8.8
2.2x = 8.8

Divide each side by '2.2'.
x = 4

Simplifying
x = 4

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