Question

Как это зделать срочно 50 балов!!!​

Answer 1

Пошаговое объяснение:

7/30+42/78=91/390+210/390=301/390

2 21/33+2 30/33=2 7/11+2 10/11=

=(2+2)+(7/11+10/11)=4+17/11=4+1 6/11

=5 6/11

32/35+4/14=32/35+2/7=32/35+10/35=

=42/35=6/5=1 1/5=0,2

26/28+8/12=13/14+2/3=39/42+28/42=

=67/42=1 25/42

21/26+1/6=63/78+13/78=76/78=38/39

8/12+24/42=2/3+4/7=14/21+12/21=26/21=

=1 5/21

4 10/52+4 9/20=4 5/26+4 9/20=

=(4+4)+(50/260+117/260)=

=8+167/260=8 167/260

29/52+2/8=29/52+1/4=29/52+13/52=

=42/52=21/26

5/15+10/35=1/3+2/7=7/21+6/21=

=13/21

3/78+33/66=1/26+3/6=3/78+39/78=

=42/78=7/13

19/27+14/18=19/27+7/9=19/27+21/27=

=40/27=1 13/27

3 8/28+3 31/44=3 2/7+3 31/44=

(3+3)+(88/308+217/308)=

=6+305/308

23/35+54/65=299/455+378/455=

=677/455=1 222/455

15/18+48/99=5/6+16/33=55/66+32/66=

=87/66=29/22=1 7/22

6/55+54/55=60/55= 12/11=1 1/11