.4x+0.4(20)=0.3x(40)

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Solution for .4x+0.4(20)=0.3x(40) equation:


Simplifying
0.4x + 0.4(20) = 0.3x(40)

Multiply 0.4 * 20
0.4x + 8 = 0.3x(40)

Reorder the terms:
8 + 0.4x = 0.3x(40)

Reorder the terms for easier multiplication:
8 + 0.4x = 0.3 * 40x

Multiply 0.3 * 40
8 + 0.4x = 12x

Solving
8 + 0.4x = 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
8 + 0.4x + -12x = 12x + -12x

Combine like terms: 0.4x + -12x = -11.6x
8 + -11.6x = 12x + -12x

Combine like terms: 12x + -12x = 0
8 + -11.6x = 0

Add '-8' to each side of the equation.
8 + -8 + -11.6x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -11.6x = 0 + -8
-11.6x = 0 + -8

Combine like terms: 0 + -8 = -8
-11.6x = -8

Divide each side by '-11.6'.
x = 0.6896551724

Simplifying
x = 0.6896551724

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