X-y=4 —> x=y+4
2x+y=11
Dengan substitusi
2(y+4) +y=11
2y+8+y=11
3y=11-8
3y=3
Y=1
X=y+4
X=5
Jawabannya C
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X-y=4 —> x=y+4
2x+y=11
Dengan substitusi
2(y+4) +y=11
2y+8+y=11
3y=11-8
3y=3
Y=1
X=y+4
X=5
Jawabannya C