Himpunan penyelesaian dari x=5-y dan 2x+3y=7 adalah... ( dengan cara substitusi)

2x + 3y = 7
2(5-y) + 3y = 7
10 - 2y + 3y = 7
y = -3
x = 5-y
x = 5-(-3)
x = 8
HP = (x,y) = (8,-3)

2x + 3y = 7
2(5-y) + 3y = 7
10 - 2y + 3y = 7
y = -3
x = 5-(-3)
x = 8