Question

Вычеслите 2 9/13 * 1 3/10 2-(1 1/2 + 1/5)

Answer 1

1)1 1/2+1/5=(НОК=10)1 5/10+2/10=1 7/10

2)2-1 7/10=1 10/10-1 7/10=(1-1)+(10/10-7/10)=3/10

2 9/13*1 3/10=3 1/2