Tentukan himpunan penyelesaian dari:X+4Y=82X-Y=2

X+4y = 8
x = 8-4y
2x-y = 2
2(8-4y)-y = 2
16-4y-y = 2
-5y = 2-16
y = -14/-5
y = 14/5 = 2,8
x = 8 – 4×2,8
x = 8 – 11,2
x = -3,2

himpunan penyelesaian = {(-3,2 ; 2,8)}