2x + 16y = 42. x + y = 16

Bab Persamaan Linear
Matematika SMP Kelas VIII

2x + 16y = 42 → dibagi 2, menjadi → x + 8y = 21

x + 8y = 21
x +   y = 16
----------------- -
     7y = 5
       y = 5/7

x + y = 16
x + 5/7 = 16
x = 112/7 - 5/7
x = 107/7

HP = { 107/7, 5/7 }