.40x+.90(80-x)=80(60)

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Solution for .40x+.90(80-x)=80(60) equation:


Simplifying
0.40x + 0.90(80 + -1x) = 80(60)
0.40x + (80 * 0.90 + -1x * 0.90) = 80(60)
0.40x + (72 + -0.9x) = 80(60)

Reorder the terms:
72 + 0.40x + -0.9x = 80(60)

Combine like terms: 0.40x + -0.9x = -0.5x
72 + -0.5x = 80(60)

Multiply 80 * 60
72 + -0.5x = 4800

Solving
72 + -0.5x = 4800

Solving for variable 'x'.

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

Add '-72' to each side of the equation.
72 + -72 + -0.5x = 4800 + -72

Combine like terms: 72 + -72 = 0
0 + -0.5x = 4800 + -72
-0.5x = 4800 + -72

Combine like terms: 4800 + -72 = 4728
-0.5x = 4728

Divide each side by '-0.5'.
x = -9456

Simplifying
x = -9456

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