2x - y - 5 =0 dan x + 2y - 1 =0

jawab

2x-y-5-0+2y-1=0
2x+y-6=0
2x=-y+6
jawaban x=-y/2+3

grafik x=-y/2+3, yER, dER, aER, nER

2x-y = 5 ×1
X+2y=1 ×2

2×-y=5
2x+4y=2
___________ -
-5y = 3
Y = -3/5
2x-y=5
2x-(-3/5) = 5
2x +3/5 = 5
2x =5 -3/5
2x = 5/1-3/5
2x = 25-3 /5
2x = 22/5
X =22/5 × 1/2
X= 22/10