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3x - 8/4 = 2y - 6 / *4
2x - 3y/4 - (2y - 17)/16 = 0 /*16
3x - 8 = 8y - 24
8x - 12y - 2y + 17 = 0
3x - 8y = - 16
8x - 14y = - 17
3x = 8y - 16 / :3
x = 8/3y - 16/3
8(8/3y) - 14y = - 17
64y - 42y = - 51
22y = - 51/ :22
y = - 2(7/22)
x = 8/3 *(-51/22)
x = -6(2/11)
Zad. 2)
(x - 2)(x + 2) + 2y = (x - 2)² + y
3x + 2y = 11
x² - 4 + 2y = x² - 4x + 4 + y
3x + 2y = 11
4x + y = 8 / *(- 2)
3x + 2y = 11
- 8x - 2y = - 16
3x + 2y = 11
- 5x = - 5 /:(-5)
x = 1
3 + 2y = 11
2y = 11 - 3
2y = 8 /:2
y = 4
x = 1
y = 4
(2x-3y)/4-(2y-17)/16=0 /*16
3x-8=8y-24
8x-12y-2y+17=0
3x-8y=-16 --->3x=-16+8y--->x=-16/3+8/3y
8x-14y=-17
-128/3+64/3y-14y=-17
22y=77
y=3,5
x=-4
x2-4+2y=x2-4x+4+y
3x+2y=11
4x+y=16
3x+2y=11
-8x-2y=-32
3x+2y=11
-5x=-21
x=4,2
y=-0,8