0.90x+0.15(450-x)=0.80(450)

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Solution for 0.90x+0.15(450-x)=0.80(450) equation:


Simplifying
0.90x + 0.15(450 + -1x) = 0.80(450)
0.90x + (450 * 0.15 + -1x * 0.15) = 0.80(450)
0.90x + (67.5 + -0.15x) = 0.80(450)

Reorder the terms:
67.5 + 0.90x + -0.15x = 0.80(450)

Combine like terms: 0.90x + -0.15x = 0.75x
67.5 + 0.75x = 0.80(450)

Multiply 0.80 * 450
67.5 + 0.75x = 360

Solving
67.5 + 0.75x = 360

Solving for variable 'x'.

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

Add '-67.5' to each side of the equation.
67.5 + -67.5 + 0.75x = 360 + -67.5

Combine like terms: 67.5 + -67.5 = 0.0
0.0 + 0.75x = 360 + -67.5
0.75x = 360 + -67.5

Combine like terms: 360 + -67.5 = 292.5
0.75x = 292.5

Divide each side by '0.75'.
x = 390

Simplifying
x = 390

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