49y^2-225=0

Solution for 49y^2-225=0 equation:

Simplifying
49y2 + -225 = 0

Reorder the terms:
-225 + 49y2 = 0

Solving
-225 + 49y2 = 0

Solving for variable 'y'.

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

Add '225' to each side of the equation.
-225 + 225 + 49y2 = 0 + 225

Combine like terms: -225 + 225 = 0
0 + 49y2 = 0 + 225
49y2 = 0 + 225

Combine like terms: 0 + 225 = 225
49y2 = 225

Divide each side by '49'.
y2 = 4.591836735

Simplifying
y2 = 4.591836735

Take the square root of each side:
y = {-2.142857143, 2.142857143}