Question

Metode substitusi dari x+3y=5 danx+y=13

Answer 1

X+y = 13
x = 13-y

x + 3y = 5
13 - y + 3y = 5
2y = 5-13
2y = -8
y = -4

x = 13 -y
   = 13 + 4
   = 17

hp = { 17, -4}