300=3*y

Solution for 300=3*y equation:

Simplifying
300 = 3y

Solving
300 = 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.
300 + -3y = 3y + -3y

Combine like terms: 3y + -3y = 0
300 + -3y = 0

Add '-300' to each side of the equation.
300 + -300 + -3y = 0 + -300

Combine like terms: 300 + -300 = 0
0 + -3y = 0 + -300
-3y = 0 + -300

Combine like terms: 0 + -300 = -300
-3y = -300

Divide each side by '-3'.
y = 100

Simplifying
y = 100