2.83=u-3

Solution for 2.83=u-3 equation:

Simplifying
2.83 = u + -3

Reorder the terms:
2.83 = -3 + u

Solving
2.83 = -3 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
2.83 + -1u = -3 + u + -1u

Combine like terms: u + -1u = 0
2.83 + -1u = -3 + 0
2.83 + -1u = -3

Add '-2.83' to each side of the equation.
2.83 + -2.83 + -1u = -3 + -2.83

Combine like terms: 2.83 + -2.83 = 0.00
0.00 + -1u = -3 + -2.83
-1u = -3 + -2.83

Combine like terms: -3 + -2.83 = -5.83
-1u = -5.83

Divide each side by '-1'.
u = 5.83

Simplifying
u = 5.83