6=.25(x+15)

Solution for 6=.25(x+15) equation:

Simplifying
6 = 0.25(x + 15)

Reorder the terms:
6 = 0.25(15 + x)
6 = (15 * 0.25 + x * 0.25)
6 = (3.75 + 0.25x)

Solving
6 = 3.75 + 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.
6 + -0.25x = 3.75 + 0.25x + -0.25x

Combine like terms: 0.25x + -0.25x = 0.00
6 + -0.25x = 3.75 + 0.00
6 + -0.25x = 3.75

Add '-6' to each side of the equation.
6 + -6 + -0.25x = 3.75 + -6

Combine like terms: 6 + -6 = 0
0 + -0.25x = 3.75 + -6
-0.25x = 3.75 + -6

Combine like terms: 3.75 + -6 = -2.25
-0.25x = -2.25

Divide each side by '-0.25'.
x = 9

Simplifying
x = 9