( 27 + 13) :8 = 40 : 8 = 5.
(40 - 16) •3 = 24 •3 = 72.
24 • 5 = 120.
42 : 3 = 14.
(200+20+8) : 2 = 228 : 2 = 114.
(200+10+4) •3 = 214 • 3 = 642.
32 • 6 = 192.
75 : 5 = 15.
Удачи)
______________________
-5<x<30
11/37-x+5/37-9/37=0
(11+5-9)/37=x
X=7/37
1/7х-0,3=3/14х+0,38
2/14х-3/14х=0,38+0,3
-1/14х=0,68
х=9,52