Chapter 7 - Section 7.5 - Solving Equations Containing Rational Expressions - Practice - Page 519: 1

x = -3

$\frac{x}{4}$+$\frac{4}{5}$=$\frac{1}{20}$ 20($\frac{x}{4}$+$\frac{4}{5}$)=$\frac{1}{20}$ 20$\frac{x}{4}$+20$\frac{4}{5}$=20$\frac{1}{20}$ 5x+4*4=1 5x+16=1 5x+16-16=1-16 5x=-15 x=-3 Check x=-3 $\frac{x}{4}$+$\frac{4}{5}$=$\frac{1}{20}$ $\frac{-3}{4}$+$\frac{4}{5}$=$\frac{1}{20}$ 20$\frac{-3}{4}$+20$\frac{4}{5}$=20$\frac{1}{20}$ 5(-3)+4*4=1 -15+16=1 1=1