-9=25v^2-30

Solution for -9=25v^2-30 equation:

Simplifying
-9 = 25v2 + -30

Reorder the terms:
-9 = -30 + 25v2

Solving
-9 = -30 + 25v2

Solving for variable 'v'.

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

Add '-25v2' to each side of the equation.
-9 + -25v2 = -30 + 25v2 + -25v2

Combine like terms: 25v2 + -25v2 = 0
-9 + -25v2 = -30 + 0
-9 + -25v2 = -30

Add '9' to each side of the equation.
-9 + 9 + -25v2 = -30 + 9

Combine like terms: -9 + 9 = 0
0 + -25v2 = -30 + 9
-25v2 = -30 + 9

Combine like terms: -30 + 9 = -21
-25v2 = -21

Divide each side by '-25'.
v2 = 0.84

Simplifying
v2 = 0.84

Take the square root of each side:
v = {-0.916515139, 0.916515139}