.4(9-2x)=.8(3x+4)

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Solution for .4(9-2x)=.8(3x+4) equation:


Simplifying
0.4(9 + -2x) = 0.8(3x + 4)
(9 * 0.4 + -2x * 0.4) = 0.8(3x + 4)
(3.6 + -0.8x) = 0.8(3x + 4)

Reorder the terms:
3.6 + -0.8x = 0.8(4 + 3x)
3.6 + -0.8x = (4 * 0.8 + 3x * 0.8)
3.6 + -0.8x = (3.2 + 2.4x)

Solving
3.6 + -0.8x = 3.2 + 2.4x

Solving for variable 'x'.

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

Add '-2.4x' to each side of the equation.
3.6 + -0.8x + -2.4x = 3.2 + 2.4x + -2.4x

Combine like terms: -0.8x + -2.4x = -3.2x
3.6 + -3.2x = 3.2 + 2.4x + -2.4x

Combine like terms: 2.4x + -2.4x = 0.0
3.6 + -3.2x = 3.2 + 0.0
3.6 + -3.2x = 3.2

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

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

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

Divide each side by '-3.2'.
x = 0.125

Simplifying
x = 0.125

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