Question

799 номер, помогите пожалуйста!!!​

Answer 1

Ответ:

1)5/4-1/2=3/4

2)5/2-2/3=12/6-4/6=8/6=1целая 2/6

3)11/3-14/5=55/15-42/15=13/15=1целая 2/15

4)11/4-11/6=33/12-22/12=11/12

Answer 2

$1) 1\frac{1}{4}=\frac{5}{4}; \frac{1}{2}=\frac{2}{4}; \frac{5}{4}-\frac{2}{4}=\frac{3}{4}$

$2)2\frac{1}{2}=\frac{5}{2} =\frac{5\cdot 3}{2 \cdot 3}=\frac{15}{6}; \frac{2}{3}=\frac{2\cdot 2}{3 \cdot 2} =\frac{4}{6}; \frac{15}{6}-\frac{4}{6}=\frac{11}{6}$

$3)3\frac{2}{3}=\frac{11}{3}=\frac{11 \cdot 5}{3 \cdot 5} =\frac{55}{15}; 2\frac{4}{5}=\frac{14}{5}=\frac{14\cdot 3}{5\cdot 3}=\frac{42}{15}; \frac{55}{15}-\frac{42}{15}=\frac{13}{15}$

$4)2\frac{3}{4}=\frac{11}{4}=\frac{11 \cdot 3}{4\cdot 3}=\frac{33}{12}; 1\frac{5}{6}=\frac{11}{6}=\frac{11\cdot 2}{6\cdot 2}=\frac{22}{12}; \frac{33}{12}-\frac{22}{12}=\frac{11}{12}$