To determine which two expressions are equivalent, we can simplify and compare each option. The expressions given are:
- \(-3x + 7y\)
- \(7y - 3x\)
- \(-7y - 3x\)
- \(-7y + 3x\)
Let's analyze the expressions:
-
\(-3x + 7y\)
This is in the form of \(-3x + 7y\). -
\(7y - 3x\)
This can be rearranged to \(-3x + 7y\) (since addition is commutative). Thus, this expression is equivalent to the first one. -
\(-7y - 3x\)
This is a different expression and has a different sign, so it is not equivalent to the first two. -
\(-7y + 3x\)
This has different terms and signs from the first two expressions, so it is not equivalent.
The two equivalent expressions are:
- \(-3x + 7y\)
- \(7y - 3x\)
So, the correct answers are:
- \(-3x + 7y\)
- \(7y - 3x\)