Question

Tentuka himpunan penyelesaian berikut
A . 2x + 5y = 6 dan 3x - 4y = 32
B. x - 3y = 5 dan 7y + 1 + 3x = 0
C . 10 - x - 2y = 0 dan 6 + 2y = 3x

Answer 1

2x + 5y = 6         x3
3x - 4y  = 32       x2
------------------
6x + 15y = 18
6x -    8y = 64
-------------------- -
        23y = - 46
            y = - 2

2x + (5.-2) = 6
2x + (-10)  = 6
2x             = 16
  x             = 8

HP = {8,-2}