Help plsss. I'm failing I need hp

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11