Задание 5А

1. $$\frac{3}{7} = \frac{18}{42}$$
2. $$\frac{11}{9} = \frac{99}{81}$$
3. $$\frac{2}{15} = \frac{8}{60}$$
4. $$\frac{7}{12} = \frac{28}{48}$$
5. $$\frac{a}{3} = \frac{5a}{15}$$
6. $$\frac{x}{9} = \frac{3x}{27}$$
7. $$\frac{2y}{3} = \frac{26y}{39}$$
8. $$\frac{3y}{8} = \frac{12y}{32}$$
9. $$\frac{3}{a} = \frac{15}{5a}$$
10. $$\frac{4}{a} = \frac{12x}{3ax}$$
11. $$\frac{2}{y} = \frac{32}{16y}$$
12. $$\frac{7}{b} = \frac{28}{4b}$$
13. $$\frac{1}{x^2} = \frac{2x}{2x^3}$$
14. $$\frac{5}{y^2} = \frac{15y}{3y^3}$$
15. $$\frac{7}{a^3} = \frac{4a}{4a^4}$$
16. $$\frac{2}{x^2} = \frac{10x^2}{5x^4}$$