X + 2y = -4 2x + z = 5 Y - 3z = 5
Matematika
Putee09
Pertanyaan
X + 2y = -4
2x + z = 5
Y - 3z = 5
2x + z = 5
Y - 3z = 5
1 Jawaban
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1. Jawaban IgFranRenaldy
X + 2Y = -4
X = -2Y - 4
2X + Z = 5
2(-2Y - 4) + Z = 5
-4Y - 8 + Z = 5
-4Y + Z = 13
-4Y + Z = 13 |x3|
Y - 3Z = 5
—————— +
-11Y = 44
Y = -4
X + 2Y = -4
X + 2(-4) = -4
X = 4
Y - 3Z = 5
-4 - 3Z = 5
-3Z = 9
Z = -3