The expression that is a difference between two terms is:
5y - 7
which algebraic expression is a difference withtwo terms?
An algebraic expression should have at least one variable, and here we know that we should find a difference (remember that a difference is a subtraction).
And it must have two terms, then the expression is something like:
A - B
Such that A or B depend on the variable.
With this in mind, we can see that the correct option (the only subtraction with two terms) is the first one:
5y - 7
If you want to learn more about algebraic expressions:
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