.3(20-x)+.5X=15

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Solution for .3(20-x)+.5X=15 equation:


Simplifying
0.3(20 + -1x) + 0.5X = 15
(20 * 0.3 + -1x * 0.3) + 0.5X = 15
(6 + -0.3x) + 0.5X = 15

Reorder the terms:
6 + 0.5X + -0.3x = 15

Solving
6 + 0.5X + -0.3x = 15

Solving for variable 'X'.

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

Add '-6' to each side of the equation.
6 + 0.5X + -6 + -0.3x = 15 + -6

Reorder the terms:
6 + -6 + 0.5X + -0.3x = 15 + -6

Combine like terms: 6 + -6 = 0
0 + 0.5X + -0.3x = 15 + -6
0.5X + -0.3x = 15 + -6

Combine like terms: 15 + -6 = 9
0.5X + -0.3x = 9

Add '0.3x' to each side of the equation.
0.5X + -0.3x + 0.3x = 9 + 0.3x

Combine like terms: -0.3x + 0.3x = 0.0
0.5X + 0.0 = 9 + 0.3x
0.5X = 9 + 0.3x

Divide each side by '0.5'.
X = 18 + 0.6x

Simplifying
X = 18 + 0.6x

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