Har bir talaba o'z variantining muvofiq namunini heldi va kerak

4x1 - 7x21,

b) 2X1 + T2 - 3X3 = 1, 3x1 + 5x3 = b.
5X1 7X? - HZ = 1,
+ 7x3b,
2x1 - 4x2 + 5x3
(3x1 + 2x2 - xs
) X. 2X39, - 5x2 + xs5.
2x1 + - 3x3 - - 11,
4x1 + 8x3 = -4,
2x1 X2 3x3
3x1 - + 3x3
3x1 + bha
2x1- 5x3
2x1 + 4x2 - xs
b) 4xj - + 5x3-11,
+ 3x2 - xs
[3x1 + 5x2 - x3 1, b) ¹ 2x1 + x, + x3 = -3, +4x2 - 3x3 2.
5x1 - 2x3 - 7,
b) 2X1 - X? + 3X3 = 2,
2xm + 7x3 \u003d 16, 2x1 - X2 - 3x3 \u003d 9, b) X1 + 5x2 + xs - - 20,
3x1 + 4x2 + 2x3 = 15.
4x1 - - xz10,
b) 2x1 + 6x2 - 38, 3x1 - 7x3 = 5. 3x1 - + x3 12, b) 5x1 + x2 + 2x3 3,
41 2x2 4x3

3X1 + X2 - 2X3 = 5, 2x1 - 3x2 + 4x3 - h,
1.23, a) X1 + 3x2 - 5x3 \u003d 3, 3x1 + xs -5x3 \u003d 10,
5X1 - X? + XZ = 1,4x1 + + 6x31€
5x1 - xs - 2x3 \u003d 1, X1 - 5X2 + X.z \u003d -33,
1.24, a) 3x1 -4x2 + x3 = 7,
2x1 + 3x2 - 3x3 = 4,2x1 + + 4x3 - - 12.
5x1 - 5x2 - 4x3 \u003d -3,xm + + 2x3
1.25, a) 4x1 - 4x2 - 9x3 O, b) 4x1 + X2 + 4x3 \u003d h, 3x1 - 3x2 - 14x3 \u003d 1. 2x1 - + 2x3 h.

1 + 3x2 -xs -7, 2xm - x, + 2x3 o, 1.26, a) 5x1 - + 2x3 - 12, X1 + X2 + 2x3 = 4, xr - 7x3 + 4x3 = 20. .4xm + x , + 4x3 b. 4x1 - 2x2 + xs = 5, 4x1 - 3x2 - x.s
1.27, a) 3x1 - 3x3 \u003d 5.3x1 + - 2x3 -2,
2x1 +4x2 - 7x3 4.+ 6x2
5x1 - X2 - 3x3 = 19, X1 + 7x2 -3x3 = 9,
1.28, a) 3X1 2X-2 X3 = -2, b) ]4X1 - x, + 3x3 = -8, + 5x2 + 5x3 (6x1 + 4x2 -2x3 O.
3x1 - 2x2 + xs + h + 3x3 -3,
1.29, a) 4X1 - T2 - 2X3 = 6, b) X1 -5x2 - x3 - -10, 2xv - 3x2 + 4x32.3x1 + 4x2 4x3 = 4.
X1 + 2x2 3x3 - - 5,2x1 - 2x2 + xs
1.30, a) 3x1 -2x2 + 3x3 -1, b) x, + 3x2 + x3 = -3,
2x1 + - 2x3 \u003d v. 3x1 + 2x2 - 2x3 \u003d -5.