7x^2-109=3

Solution for 7x^2-109=3 equation:

Simplifying
7x2 + -109 = 3

Reorder the terms:
-109 + 7x2 = 3

Solving
-109 + 7x2 = 3

Solving for variable 'x'.

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

Add '109' to each side of the equation.
-109 + 109 + 7x2 = 3 + 109

Combine like terms: -109 + 109 = 0
0 + 7x2 = 3 + 109
7x2 = 3 + 109

Combine like terms: 3 + 109 = 112
7x2 = 112

Divide each side by '7'.
x2 = 16

Simplifying
x2 = 16

Take the square root of each side:
x = {-4, 4}