1) 3 1/5-2/5=2 6/5-2/5=2 4/5
2) 5 1/2*4/15=11/2*4/15=22/15=1 7/15
3) 8/9+6 2/3=8/9+6 6/9=6 14/9=7 5/9
424+452=876
А-4
А-2
А-4
А-4
В-2
Е-7
1) 2743 * 8 + 10624 * 5 = 21944 + 53120 = 75064
2) 46028 * 6 - 27401 * 4 = 276168 - 109604 = 166564
3) 5376 * 9 + 14009 = 48384 + 14009 = 62393
4) 30583 * 9 - 9706 = 275247 - 9706 = 265541