5905-27v=316
27v=5905-316
27v=5589
v=5589:27
v=207
34s-68=68
34s=68+68
34s=136
s=136:34
s=4
54b-28=26
54b=26+28
54b=54
b=54:54
b=1
(6+3/7)*а + (1+1/2)*а при а = 14
(6*7+3)а/7 + (1*2+1)а/2 = 45а/7 + 3а/2 = 90а/14 + 21а/14 = 111а/14= при а =14 = (111*14)/14 = 111
=(7733-2929+2916)/20=7720/20=386
Второй номер
а) 11 + 28= 39
б) 67 + 25 = 92
в) 72 - 39 = 33
г) 47 + 23 = 70