<u>Answer:</u>
more than one variable (two or more)
<u>Explanation:</u>
<u>Literal equations</u> are used to represent a known quantity/value using unknown values.
Now,<u> if we have only one variable</u>, then this variable will no longer be unknown as it will be equal to the known quantity. This means that the equation will not be literal.
<u>Example:</u>
Number of tickets is 25.
x = 25 where x is the number of tickets
If we have<u> two variable</u>, neither of them will be known. This means that the equation will be literal.
<u>Example:</u>
Number of apples added to number of bananas is 15.
x + y = 15
where x is the number of apples and y is the number of bananas, neither of them is known.
<u>Based on the above,</u> the literal equation must have more than one variable (two or more)
Hope this helps :)