Выполни сложение 3/4 + 5/6 13/44 + 7/33 44/17 + 19/90
3/4+5/6/9=9/12+10/12=22/12=1 10/12
1) 3/4+5/6=9/12+10/12=19/12=1 7/12 2) 13/44+7/33=39/132+28/132=67/132 3) 44/17+19/90=3960/1530+323/1520=4283/1520