А. / 200/200/320. С. /20/40/80
Б. /80. /90. /100. д. /4. /5/10
А+Б/280/290/420. с*д/80/200/800
А-Б/120 /110 /230. с:д/5. /8/8
72000 : 16 = 4500 ( нарциссов )
4500 : 12 = 375 ( нарциссов ) двенадцатая часть
375 : 15 = 25 ( букетов ) Ответ
72-56÷(5+2)+3*8=72-56÷7+3*8=72-8+24=88
1 2/5 : 5/7 + 3/8 = 7/5 * 7/5 + 3/8 = 49/25 + 3/8 = (392+75)/200 = 467/200 = 2 67/200 = 2,335