3+6u=7u

Solution for 3+6u=7u equation:

Simplifying
3 + 6u = 7u

Solving
3 + 6u = 7u

Solving for variable 'u'.

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

Add '-7u' to each side of the equation.
3 + 6u + -7u = 7u + -7u

Combine like terms: 6u + -7u = -1u
3 + -1u = 7u + -7u

Combine like terms: 7u + -7u = 0
3 + -1u = 0

Add '-3' to each side of the equation.
3 + -3 + -1u = 0 + -3

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

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

Divide each side by '-1'.
u = 3

Simplifying
u = 3