21+1.5y=y

Solution for 21+1.5y=y equation:

Simplifying
21 + 1.5y = y

Solving
21 + 1.5y = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
21 + 1.5y + -1y = y + -1y

Combine like terms: 1.5y + -1y = 0.5y
21 + 0.5y = y + -1y

Combine like terms: y + -1y = 0
21 + 0.5y = 0

Add '-21' to each side of the equation.
21 + -21 + 0.5y = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 0.5y = 0 + -21
0.5y = 0 + -21

Combine like terms: 0 + -21 = -21
0.5y = -21

Divide each side by '0.5'.
y = -42

Simplifying
y = -42