21x^2-9x^2=0

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Solution for 21x^2-9x^2=0 equation: 


Simplifying
21x2 + -9x2 = 0

Combine like terms: 21x2 + -9x2 = 12x2
12x2 = 0

Solving
12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
x2 = 0

Simplifying
x2 = 0

Take the square root of each side:
x = {0}

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