.40x+.05(20-x)=.10(52)

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Solution for .40x+.05(20-x)=.10(52) equation:


Simplifying
0.40x + 0.05(20 + -1x) = 0.10(52)
0.40x + (20 * 0.05 + -1x * 0.05) = 0.10(52)
0.40x + (1 + -0.05x) = 0.10(52)

Reorder the terms:
1 + 0.40x + -0.05x = 0.10(52)

Combine like terms: 0.40x + -0.05x = 0.35x
1 + 0.35x = 0.10(52)

Multiply 0.10 * 52
1 + 0.35x = 5.2

Solving
1 + 0.35x = 5.2

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 0.35x = 5.2 + -1

Combine like terms: 1 + -1 = 0
0 + 0.35x = 5.2 + -1
0.35x = 5.2 + -1

Combine like terms: 5.2 + -1 = 4.2
0.35x = 4.2

Divide each side by '0.35'.
x = 12

Simplifying
x = 12

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