No, because -15 have 2 corresponding elements .
[ 1 ] Given
[ 2 ] Exterior Sides Opposite Rays
[ 3 ] Definition of Supplementary angles
[ 4 ] First substitution
[ 5 ] Subtraction Property of Equality
[ 6 ] Second Substitution
[ 7 ] If corrsp. equal, the lines ||
They are different equations lol. If you plug in the same x and y for both you wont get the same answer. Do you have answer choices?
I believe the answers to be 75+5x=y