Help please this is urgent

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

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x