7=n^2+3

Solution for 7=n^2+3 equation:

Simplifying
7 = n2 + 3

Reorder the terms:
7 = 3 + n2

Solving
7 = 3 + n2

Solving for variable 'n'.

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

Add '-1n2' to each side of the equation.
7 + -1n2 = 3 + n2 + -1n2

Combine like terms: n2 + -1n2 = 0
7 + -1n2 = 3 + 0
7 + -1n2 = 3

Add '-7' to each side of the equation.
7 + -7 + -1n2 = 3 + -7

Combine like terms: 7 + -7 = 0
0 + -1n2 = 3 + -7
-1n2 = 3 + -7

Combine like terms: 3 + -7 = -4
-1n2 = -4

Divide each side by '-1'.
n2 = 4

Simplifying
n2 = 4

Take the square root of each side:
n = {-2, 2}