(39/5–16/5х)•5/6=(6/5–4х):8/15
39/6–8/3х=9/4–15/2х
15/2х–8/3х=9/4–39/6
(45–16)/6х=(27–78)/12
29/6х=–51/12
х=(-51•6)/(12•29)
х=-51/58
(13/2–13/10х)•4/13=(4/5–3х):6/7
2–2/5х=14/15–7/2х
7/2х–2/5х=14/15–2
(35–4)/10х=(14–30)/15
31/10х=–16/15
х=(–16•10)/(15•31)
х=–160/465=–32/93
(12/5–6/5х)7 (18/5–5х)2
------------------ = ----------------
9 15
84/5–42/5х 36/5–10х
------------------ = ---------------
9 15
15(84/5–42/5х) = 9(36/5–10х)
252–126х = 324/5–90х
–36х = (324–1260)/5
–36х = –936/5
х = -936/(5•(-36))
х = 26/5=5 1/5
2(х+2)+3(4х–3)–5+х
----------------------------- = 1
6
2х+4+12х–9–5+х
------------------------- = 1
6
15х–10 = 6
15х =16
х=16/15
(15•8)/(2•3)–(49•2)/(4•7) 27/8+11/4
--------------------------------- + -------------- =
(110•3)/5 (24•5)/12
20–7/2 49/8
= ----------- + -------- =
66 10
= 33/(2•66)+49/(8•10) = 1/4+49/80 =
= (20+49)/80 = 69/80
27/5х•(–59/27+23/18)=49/4+5/2
–59/5х+(3•23)/(5•2)х = (49+10)/4
–59/5х+69/10х = 59/4
(69–118)/10х = 59/4
–49/10х = 59/4
х = (59•10)/(4•(-49) = –590/196 =
= –295/98 = –3 1/98