15x-5y=30 dg 3x+y+6=0
Matematika
ramah5
Pertanyaan
15x-5y=30 dg 3x+y+6=0
1 Jawaban
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1. Jawaban NurrachmanBudiMulya
15x - 5y = 30
3x + y = -6
maka
15x - 5y = 30
15x + 5y = -30
(mencari y)
-10y = 60
-y = 6
y = -6
(mencari x)
15x = 0
x = 0
bukti
15x - 5y = 30
15.0 - 5.(-6) = 30
0 - (-30) = 30
30 = 30
3x + y + 6 = 0
3.0 + (-6) + 6 = 0
0 - 6 + 6 = 0
0 = 0
terbukti!