7n^2-63=

Solution for 7n^2-63= equation:

Simplifying
7n2 + -63 = 0

Reorder the terms:
-63 + 7n2 = 0

Solving
-63 + 7n2 = 0

Solving for variable 'n'.

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

Add '63' to each side of the equation.
-63 + 63 + 7n2 = 0 + 63

Combine like terms: -63 + 63 = 0
0 + 7n2 = 0 + 63
7n2 = 0 + 63

Combine like terms: 0 + 63 = 63
7n2 = 63

Divide each side by '7'.
n2 = 9

Simplifying
n2 = 9

Take the square root of each side:
n = {-3, 3}