21x^2-27-15x^2-5=

Solution for 21x^2-27-15x^2-5= equation:

Simplifying
21x2 + -27 + -15x2 + -5 = 0

Reorder the terms:
-27 + -5 + 21x2 + -15x2 = 0

Combine like terms: -27 + -5 = -32
-32 + 21x2 + -15x2 = 0

Combine like terms: 21x2 + -15x2 = 6x2
-32 + 6x2 = 0

Solving
-32 + 6x2 = 0

Solving for variable 'x'.

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

Add '32' to each side of the equation.
-32 + 32 + 6x2 = 0 + 32

Combine like terms: -32 + 32 = 0
0 + 6x2 = 0 + 32
6x2 = 0 + 32

Combine like terms: 0 + 32 = 32
6x2 = 32

Divide each side by '6'.
x2 = 5.333333333

Simplifying
x2 = 5.333333333

Take the square root of each side:
x = {-2.309401077, 2.309401077}