-1.2=-0.9u+0.5u

Solution for -1.2=-0.9u+0.5u equation:

Simplifying
-1.2 = -0.9u + 0.5u

Combine like terms: -0.9u + 0.5u = -0.4u
-1.2 = -0.4u

Solving
-1.2 = -0.4u

Solving for variable 'u'.

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

Add '0.4u' to each side of the equation.
-1.2 + 0.4u = -0.4u + 0.4u

Combine like terms: -0.4u + 0.4u = 0.0
-1.2 + 0.4u = 0.0

Add '1.2' to each side of the equation.
-1.2 + 1.2 + 0.4u = 0.0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 0.4u = 0.0 + 1.2
0.4u = 0.0 + 1.2

Combine like terms: 0.0 + 1.2 = 1.2
0.4u = 1.2

Divide each side by '0.4'.
u = 3

Simplifying
u = 3