.25m+.2(10-m)=0

Solution for .25m+.2(10-m)=0 equation:

Simplifying
0.25m + 0.2(10 + -1m) = 0
0.25m + (10 * 0.2 + -1m * 0.2) = 0
0.25m + (2 + -0.2m) = 0

Reorder the terms:
2 + 0.25m + -0.2m = 0

Combine like terms: 0.25m + -0.2m = 0.05m
2 + 0.05m = 0

Solving
2 + 0.05m = 0

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 + 0.05m = 0 + -2

Combine like terms: 2 + -2 = 0
0 + 0.05m = 0 + -2
0.05m = 0 + -2

Combine like terms: 0 + -2 = -2
0.05m = -2

Divide each side by '0.05'.
m = -40

Simplifying
m = -40