12=.25(x+20)

Solution for 12=.25(x+20) equation:

Simplifying
12 = 0.25(x + 20)

Reorder the terms:
12 = 0.25(20 + x)
12 = (20 * 0.25 + x * 0.25)
12 = (5 + 0.25x)

Solving
12 = 5 + 0.25x

Solving for variable 'x'.

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

Add '-0.25x' to each side of the equation.
12 + -0.25x = 5 + 0.25x + -0.25x

Combine like terms: 0.25x + -0.25x = 0.00
12 + -0.25x = 5 + 0.00
12 + -0.25x = 5

Add '-12' to each side of the equation.
12 + -12 + -0.25x = 5 + -12

Combine like terms: 12 + -12 = 0
0 + -0.25x = 5 + -12
-0.25x = 5 + -12

Combine like terms: 5 + -12 = -7
-0.25x = -7

Divide each side by '-0.25'.
x = 28

Simplifying
x = 28