0.85x+0.30(100-x)=0.75x

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Solution for 0.85x+0.30(100-x)=0.75x equation:


Simplifying
0.85x + 0.30(100 + -1x) = 0.75x
0.85x + (100 * 0.30 + -1x * 0.30) = 0.75x
0.85x + (30 + -0.3x) = 0.75x

Reorder the terms:
30 + 0.85x + -0.3x = 0.75x

Combine like terms: 0.85x + -0.3x = 0.55x
30 + 0.55x = 0.75x

Solving
30 + 0.55x = 0.75x

Solving for variable 'x'.

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

Add '-0.75x' to each side of the equation.
30 + 0.55x + -0.75x = 0.75x + -0.75x

Combine like terms: 0.55x + -0.75x = -0.2x
30 + -0.2x = 0.75x + -0.75x

Combine like terms: 0.75x + -0.75x = 0.00
30 + -0.2x = 0.00

Add '-30' to each side of the equation.
30 + -30 + -0.2x = 0.00 + -30

Combine like terms: 30 + -30 = 0
0 + -0.2x = 0.00 + -30
-0.2x = 0.00 + -30

Combine like terms: 0.00 + -30 = -30
-0.2x = -30

Divide each side by '-0.2'.
x = 150

Simplifying
x = 150

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