0.15x+0.05(4-x)=0.10(12)

Solution for 0.15x+0.05(4-x)=0.10(12) equation:

Simplifying
0.15x + 0.05(4 + -1x) = 0.10(12)
0.15x + (4 * 0.05 + -1x * 0.05) = 0.10(12)
0.15x + (0.2 + -0.05x) = 0.10(12)

Reorder the terms:
0.2 + 0.15x + -0.05x = 0.10(12)

Combine like terms: 0.15x + -0.05x = 0.1x
0.2 + 0.1x = 0.10(12)

Multiply 0.10 * 12
0.2 + 0.1x = 1.2

Solving
0.2 + 0.1x = 1.2

Solving for variable 'x'.

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

Add '-0.2' to each side of the equation.
0.2 + -0.2 + 0.1x = 1.2 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + 0.1x = 1.2 + -0.2
0.1x = 1.2 + -0.2

Combine like terms: 1.2 + -0.2 = 1
0.1x = 1

Divide each side by '0.1'.
x = 10

Simplifying
x = 10