6=-u+42-2y

Solution for 6=-u+42-2y equation:

Simplifying
6 = -1u + 42 + -2y

Reorder the terms:
6 = 42 + -1u + -2y

Solving
6 = 42 + -1u + -2y

Solving for variable 'u'.

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

Add 'u' to each side of the equation.
6 + u = 42 + -1u + u + -2y

Combine like terms: -1u + u = 0
6 + u = 42 + 0 + -2y
6 + u = 42 + -2y

Add '-6' to each side of the equation.
6 + -6 + u = 42 + -6 + -2y

Combine like terms: 6 + -6 = 0
0 + u = 42 + -6 + -2y
u = 42 + -6 + -2y

Combine like terms: 42 + -6 = 36
u = 36 + -2y

Simplifying
u = 36 + -2y