Question

как решить пример ( 2 3/4 - 1 1/3)+5/24 * 1,72

Answer 1

( 2 3/4 - 1 1/3)+5/24 * 1,72=1 31/40
1)2 3/4-1 1/3=2 9/12-1 4/12=1 5/12
2)5/24*1 72/100=5/24*172/100=43/120
3)1 5/12+43/120=17/12+43/120=170/120+43/120=213/120=1 31/40