(.15)(20-X)+.35=(.30)(20)

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Solution for (.15)(20-X)+.35=(.30)(20) equation:


Simplifying
(0.15)(20 + -1X) + 0.35 = (0.30)(20)
(20 * 0.15 + -1X * 0.15) + 0.35 = (0.30)(20)
(3 + -0.15X) + 0.35 = (0.30)(20)

Reorder the terms:
3 + 0.35 + -0.15X = (0.30)(20)

Combine like terms: 3 + 0.35 = 3.35
3.35 + -0.15X = (0.30)(20)

Multiply 0.30 * 20
3.35 + -0.15X = 6

Solving
3.35 + -0.15X = 6

Solving for variable 'X'.

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

Add '-3.35' to each side of the equation.
3.35 + -3.35 + -0.15X = 6 + -3.35

Combine like terms: 3.35 + -3.35 = 0.00
0.00 + -0.15X = 6 + -3.35
-0.15X = 6 + -3.35

Combine like terms: 6 + -3.35 = 2.65
-0.15X = 2.65

Divide each side by '-0.15'.
X = -17.66666667

Simplifying
X = -17.66666667

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