Elementary Algebra

$=18$
We plug in y=8 to obtain: $\frac{y+16}{6} + \frac{50-y}{3}$ $= \frac{8+16}{6} + \frac{50-8}{3}$ $= \frac{24}{6} + \frac{42}{3}$ $= 4 + 14$ $= 18$