Answer
a.) 180$^{\circ}$-x$^{\circ}$
b.) 192$^{\circ}$-3x$^{\circ}$
c.) 180$^{\circ}$-2x$^{\circ}$-5y$^{\circ}$
Work Step by Step
To find the measure of the second of two supplementary angles you subtract the value of the given angle from 180$^{\circ}$.
