2y+3=3(y+21)

Solution for 2y+3=3(y+21) equation:

Simplifying
2y + 3 = 3(y + 21)

Reorder the terms:
3 + 2y = 3(y + 21)

Reorder the terms:
3 + 2y = 3(21 + y)
3 + 2y = (21 * 3 + y * 3)
3 + 2y = (63 + 3y)

Solving
3 + 2y = 63 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
3 + 2y + -3y = 63 + 3y + -3y

Combine like terms: 2y + -3y = -1y
3 + -1y = 63 + 3y + -3y

Combine like terms: 3y + -3y = 0
3 + -1y = 63 + 0
3 + -1y = 63

Add '-3' to each side of the equation.
3 + -3 + -1y = 63 + -3

Combine like terms: 3 + -3 = 0
0 + -1y = 63 + -3
-1y = 63 + -3

Combine like terms: 63 + -3 = 60
-1y = 60

Divide each side by '-1'.
y = -60

Simplifying
y = -60