28x^2-63=20

Solution for 28x^2-63=20 equation:

Simplifying
28x2 + -63 = 20

Reorder the terms:
-63 + 28x2 = 20

Solving
-63 + 28x2 = 20

Solving for variable 'x'.

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

Add '63' to each side of the equation.
-63 + 63 + 28x2 = 20 + 63

Combine like terms: -63 + 63 = 0
0 + 28x2 = 20 + 63
28x2 = 20 + 63

Combine like terms: 20 + 63 = 83
28x2 = 83

Divide each side by '28'.
x2 = 2.964285714

Simplifying
x2 = 2.964285714

Take the square root of each side:
x = {-1.721710113, 1.721710113}