0.15x+0.10(280-x)=31

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Solution for 0.15x+0.10(280-x)=31 equation: 


Simplifying
0.15x + 0.10(280 + -1x) = 31
0.15x + (280 * 0.10 + -1x * 0.10) = 31
0.15x + (28 + -0.1x) = 31

Reorder the terms:
28 + 0.15x + -0.1x = 31

Combine like terms: 0.15x + -0.1x = 0.05x
28 + 0.05x = 31

Solving
28 + 0.05x = 31

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 0.05x = 31 + -28

Combine like terms: 28 + -28 = 0
0 + 0.05x = 31 + -28
0.05x = 31 + -28

Combine like terms: 31 + -28 = 3
0.05x = 3

Divide each side by '0.05'.
x = 60

Simplifying
x = 60

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