21u-14=0+20u

Solution for 21u-14=0+20u equation:

Simplifying
21u + -14 = 0 + 20u

Reorder the terms:
-14 + 21u = 0 + 20u
Remove the zero:
-14 + 21u = 20u

Solving
-14 + 21u = 20u

Solving for variable 'u'.

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

Add '-20u' to each side of the equation.
-14 + 21u + -20u = 20u + -20u

Combine like terms: 21u + -20u = 1u
-14 + 1u = 20u + -20u

Combine like terms: 20u + -20u = 0
-14 + 1u = 0

Add '14' to each side of the equation.
-14 + 14 + 1u = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 1u = 0 + 14
1u = 0 + 14

Combine like terms: 0 + 14 = 14
1u = 14

Divide each side by '1'.
u = 14

Simplifying
u = 14