Question

Помогите
a) 7 $\frac{5}{12}$ + 4 $\frac{3}{8}$
б) 3 $\frac{11}{20}$ + 2 $\frac{19}{20}$
в) 9 $\frac{5}{6}$ - 2 $\frac{3}{4}$
г) 3 $\frac{3}{10}$ - 1 $\frac{7}{15}$

Answer 1

1)7 5/12+4 3/8=7 10/24+4 9/24=11 19/24
2)3 11/20+2 19/20=5 30/20=6 10/20=6 1/2
3)9 5/6-2 3/4=9 10/12-2 9/12=7 1/12
4)3 3/10-1 7/15=3 9/30-1 14/30=2 39/30-1 14/30=1 25/30=1 5/6

Answer 2

$7 \frac{5}{12} +4 \frac{3}{8} =7 \frac{10}{24} +4 \frac{9}{24} =11 \frac{19}{24}$

$3 \frac{11}{20} +2 \frac{19}{20} =5 \frac{30}{20} =6 \frac{1}{2}$

$9 \frac{5}{6} -2 \frac{3}{4} =9 \frac{10}{12} -2 \frac{9}{12} =7 \frac{1}{12}$

$3 \frac{3}{10} -1 \frac{7}{15} =3 \frac{9}{30} -1 \frac{14}{30} =1 \frac{25}{30} =1 \frac{5}{6}$