-7a^2=21

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Solution for -7a^2=21 equation: 


Simplifying
-7a2 = 21

Solving
-7a2 = 21

Solving for variable 'a'.

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

Divide each side by '-7'.
a2 = -3

Simplifying
a2 = -3

Reorder the terms:
3 + a2 = -3 + 3

Combine like terms: -3 + 3 = 0
3 + a2 = 0

The solution to this equation could not be determined.

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