-3x + y = 6 2x – 4y = -14tolong kerjakan yang benar pakai cara campuran atau subsitusi
Jawaban:
SPLDV =
-3x + y = 6
2x – 4y = -14
———–
Elim y :
-12x + 4y = 24
2x – 4y = -14
—————–(+)
-10x = 10
x = -1
subtitusikan x ke pers 1
-3x + y = 6
-3(-1) + y = 6
y = 3
HP = {(-1,3)}