1)29+231=260 2)260×3=780 3)780-32=748 4)256:8=32 5)260+780=1040 6)1040-748=292 7)292+32=324
(5 9/15 - 1 5/15):(7
7/12 - 2 3/12)*5/4 = 64/15 : 16/3 * 5/4 = 64/15*3/16*5/4=4/5*1/1*5/4=1
<span> 490.539:49+2*(18703-736):6=16000
18703-736=17967
2*17967=35934
35934 :6=5989
490 539 :49=10 011
10 011+5989=16000</span>
23*3=69 кг продали
69+45=114 кг было всего печенья
1) =34/4:21/8=35/4*8/21=5/1*1/3=5/3=1 целая 2/3
2) =51/50:153/25=51/50*25/153=1/2*1/3=1/6
3) =25/8:15/4=25/8*4/15=5/2*1/3=5/6
4) =28/9:49/6=28/9*6/49=4/3*2/7=8/21
5) =21/11:16/3=24/11*3/16=3/11*3/2=9/22
6) =23/15:46/45=23/15*45/46=1/1*3/2=3/2=1 целая 1/2