.25(m+8)=.5

Solution for .25(m+8)=.5 equation:

Simplifying
0.25(m + 8) = 0.5

Reorder the terms:
0.25(8 + m) = 0.5
(8 * 0.25 + m * 0.25) = 0.5
(2 + 0.25m) = 0.5

Solving
2 + 0.25m = 0.5

Solving for variable 'm'.

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

Add '-2' to each side of the equation.
2 + -2 + 0.25m = 0.5 + -2

Combine like terms: 2 + -2 = 0
0 + 0.25m = 0.5 + -2
0.25m = 0.5 + -2

Combine like terms: 0.5 + -2 = -1.5
0.25m = -1.5

Divide each side by '0.25'.
m = -6

Simplifying
m = -6