EQUATION
Which of the following is an equation?
A. X + 2
B. X + 2 = 5
C. X + 2 > 5
D. X + 2 < 5
The answer is letter B. x + 2 = 5
An equation is a mathematical term where an expression is equivalent to a value, which is why we use an equal sign to satisfy an expression.
Letter A is a expression, since it does not equal to any value and letters c and d are inequalities which means the expression is compared by a value.
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