- a) 7 - 4$$\frac{5}{6}$$ = 6$$\frac{6}{6}$$ - 4$$\frac{5}{6}$$ = 2$$\frac{1}{6}$$
- б) 4$$\frac{3}{10}$$ + 2$$\frac{5}{12}$$ = 4$$\frac{18}{60}$$ + 2$$\frac{25}{60}$$ = 6$$\frac{43}{60}$$
- в) 2$$\frac{3}{10}$$ * 1$$\frac{1}{14}$$ = $$\frac{23}{10}$$ * $$\frac{15}{14}$$ = $$\frac{23*15}{10*14}$$ = $$\frac{23*3}{2*14}$$ = $$\frac{69}{28}$$ = 2$$\frac{13}{28}$$
Ответ: а) 2$$\frac{1}{6}$$; б) 6$$\frac{43}{60}$$; в) 2$$\frac{13}{28}$$