Metode substitusi x-1=3 dan 2x+3y=16

x=3+1
x=4

2x +3y=16
2(4) +3y=16
8+3y=16
3y=16/8
y=2/3

x - 1 = 3
x = 1 + 3
x = 4

substistusikan nilai x tersebut

2x + 3y = 16
2(4) + 3y = 16
3y = 16 - 8
3y = 8
y = 8/3