6y-21=5y

Solution for 6y-21=5y equation:

Simplifying
6y + -21 = 5y

Reorder the terms:
-21 + 6y = 5y

Solving
-21 + 6y = 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
-21 + 6y + -5y = 5y + -5y

Combine like terms: 6y + -5y = 1y
-21 + 1y = 5y + -5y

Combine like terms: 5y + -5y = 0
-21 + 1y = 0

Add '21' to each side of the equation.
-21 + 21 + 1y = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 1y = 0 + 21
1y = 0 + 21

Combine like terms: 0 + 21 = 21
1y = 21

Divide each side by '1'.
y = 21

Simplifying
y = 21