x+(0.35*(100-x))=81

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Solution for x+(0.35*(100-x))=81 equation:


Simplifying
x + (0.35(100 + -1x)) = 81
x + ((100 * 0.35 + -1x * 0.35)) = 81
x + ((35 + -0.35x)) = 81
x + (35 + -0.35x) = 81

Remove parenthesis around (35 + -0.35x)
x + 35 + -0.35x = 81

Reorder the terms:
35 + x + -0.35x = 81

Combine like terms: x + -0.35x = 0.65x
35 + 0.65x = 81

Solving
35 + 0.65x = 81

Solving for variable 'x'.

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

Add '-35' to each side of the equation.
35 + -35 + 0.65x = 81 + -35

Combine like terms: 35 + -35 = 0
0 + 0.65x = 81 + -35
0.65x = 81 + -35

Combine like terms: 81 + -35 = 46
0.65x = 46

Divide each side by '0.65'.
x = 70.76923077

Simplifying
x = 70.76923077

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