3) 4) 1)
* + y = 33,
x - y = 39,
2)
x - у - 11;
x + y = 61;
x+2y = 27.
4х- у - 19,
3х - у - 11;
x + 15 y = 20;
7x - 4y = 11,5,
(11х - 13 y = -35,
5) 9х+5y= -5,5;
-17х + 2y = 36;
2
7)
1x + y = 13
6)
--
Y = 2,
= -1
8)
2
х
21
o y = 6;
4
х
= 32,
20
33
25
9)
8 - от гоо
10)
9
= -38;
со 13
= wi-
10