How many pairs of whole numbers have a sum of 110

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?