1.2+(-0.9+m)=

Solution for 1.2+(-0.9+m)= equation:

Simplifying
1.2 + (-0.9 + m) = 0

Remove parenthesis around (-0.9 + m)
1.2 + -0.9 + m = 0

Combine like terms: 1.2 + -0.9 = 0.3
0.3 + m = 0

Solving
0.3 + m = 0

Solving for variable 'm'.

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

Add '-0.3' to each side of the equation.
0.3 + -0.3 + m = 0 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + m = 0 + -0.3
m = 0 + -0.3

Combine like terms: 0 + -0.3 = -0.3
m = -0.3

Simplifying
m = -0.3