.20x+.50(12-x)=.30(22)

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Solution for .20x+.50(12-x)=.30(22) equation:


Simplifying
0.20x + 0.50(12 + -1x) = 0.30(22)
0.20x + (12 * 0.50 + -1x * 0.50) = 0.30(22)
0.20x + (6 + -0.5x) = 0.30(22)

Reorder the terms:
6 + 0.20x + -0.5x = 0.30(22)

Combine like terms: 0.20x + -0.5x = -0.3x
6 + -0.3x = 0.30(22)

Multiply 0.30 * 22
6 + -0.3x = 6.6

Solving
6 + -0.3x = 6.6

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 + -6 + -0.3x = 6.6 + -6

Combine like terms: 6 + -6 = 0
0 + -0.3x = 6.6 + -6
-0.3x = 6.6 + -6

Combine like terms: 6.6 + -6 = 0.6
-0.3x = 0.6

Divide each side by '-0.3'.
x = -2

Simplifying
x = -2

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