5m/6n:15m^2/8=5m/6n*8/15m^2(сокращаем)=4/3n*3m=4/12nm
(5+5+5)-(5+5)*0=(15)-(10)*0=15-0=15
816
× 45
______
4080
+3264
_______
36720
4965
× 78
_____
39720
+34755
______
387270
7036
× 25
_____
35180
+14072
_______
175900
978
× 97
_____
6846
+8802
______
94866
59596
× 16
______
357576
+59596
_______
953536
(2914+140592:16:101-1723)*(1317-32288:32)=
1)140592:16=8787
2)8787:101=87
3)2914+87=3001
4)3001-1723=1278
5)32288:32=1009
6)1317-1009=308
7)1278*308=393624