( 1\14 - 8\7) : ( - 3) - 6 1\13 : ( - 6 1\ 13)=

5/34-7/51=(30-28)/204=1/102; б)(11/12-75/100)+1/16=(550/600-450/600)+1/16=150/600+1/16=1/4+1/16=5/16; в)14/3+17/14-47/21=(196+51-94)/42=153/42=31/14=2целых3/14; г)7-17/4-5/3=(84-51-20)/12=13/12=1целая 1/12

А) x=-3,7
б) y=-12,5
в) x=6 и x=-6

3/8 х- 1/6 х=1.37-0.82
9-4 / 24 = 0.55
5/24 х=0.55
х=0.55*24 / 5 =0.264

30 10 24 8 36 12
--- = ---; --- = --; --- = ---
33 11 27 9 39 13