15-(u+1.8)=11.2

Solution for 15-(u+1.8)=11.2 equation:

Simplifying
15 + -1(u + 1.8) = 11.2

Reorder the terms:
15 + -1(1.8 + u) = 11.2
15 + (1.8 * -1 + u * -1) = 11.2
15 + (-1.8 + -1u) = 11.2

Combine like terms: 15 + -1.8 = 13.2
13.2 + -1u = 11.2

Solving
13.2 + -1u = 11.2

Solving for variable 'u'.

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

Add '-13.2' to each side of the equation.
13.2 + -13.2 + -1u = 11.2 + -13.2

Combine like terms: 13.2 + -13.2 = 0.0
0.0 + -1u = 11.2 + -13.2
-1u = 11.2 + -13.2

Combine like terms: 11.2 + -13.2 = -2
-1u = -2

Divide each side by '-1'.
u = 2

Simplifying
u = 2