(2,5+1 2/3)×(3 1/3-1 14/15)=
1)2,5+1 2/3=2 5/10+1 2/3=25/10+5/3=75+50=125/30=25/6
30
2) 3 1/3-1 14/15=10/3-29/15=50-29 = 21/15=7/5
15
3) 25/6×7/5=25×7 = 35/6=5 5/6
6×5
(2,5+1 2/3)×(3 1/3-1 14/15)=
1)2,5+1 2/3=2 5/10+1 2/3=25/10+5/3=75+50=125/30=25/6
30
2) 3 1/3-1 14/15=10/3-29/15=50-29 = 21/15=7/5
15
3) 25/6×7/5=25×7 = 35/6=5 5/6
6×5