Question

Решите пример!!по действиям!

Answer 1

1,3:13/12=12/10=1,2......

Answer 2

1) 1+1/12=12/12+1/12=13/12;
2)1,3÷13/12=1_3/10÷13/12= 13/10×12/13=(13×12)/(10×13)=6/5=1_1/5=1,2