Which of the following can be considered as an equation?

5 + 67 = 80 - 8

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2 x + 77 > 3

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3 x + 4 y \leq 8

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3 x^{2} + 7 y + 3 = 0

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Solution

The correct option is D $3 x^{2} + 7 y + 3 = 0$

An equation is a statement of an equality containing one or more variables.
5 + 67 = 80 - 8 does not have a variable.
$2 x + 77 > 3$ and $3 x + 4 y \leq 8$ are inequalities.
Only $3 x^{2} + 7 y + 3 = 0$ is an equation.

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