Question

1276. 1)
(2x - y = - 1 / 3
13y - 4x = 17,1,
3) x + y = 0,4
Ymp
1277. 1) * - y = -5
10x – 3y = 24
x + y = - 11
1284. 1
4x + 3y = 42
9x + 2y = -1
3)
| 0 - 1 = 0
(4x +gy - 9 = 0,
(5 x - 6y - 17 = 0;
1278
1,5 x - 1,2y + 18 = 0,
10,7x - 1,8y + 14,6 = 0.​