Question

Выполните действия. 5/12 + 7/12; 2/15 + 3/15; 3/16 + 5/16;
13/18 - 5/18; 3+20 + 9/20

Answer 1

5/12+7/12=12/12=1
2/15+3/15=5/15=1/3
3/16+5/16=8/16=1/2
13/18-5/18=8/18=4/9
23 9/20

Answer 2

512+712=1212=1

215+315=515=13

316+516=816=12

1318-518=818=49

3+20+920=23 920