Arti rumus ini x = 3y x – 5 = 5{y – 5}

Bab Persamaan Linear
Matematika SMP Kelas VIII

x = 3y

x – 5 = 5 (y – 5)
3y – 5 = 5y – 25
3y – 5y = -25 + 5
-2y = -20
y = -20 / -2
y = 10

x = 3y 
   = 3 . 10
   = 30

HP = {(30, 10)}