Tentukan nilai x,y,dan z X = 2y + 1 X + 2z = 7 Z - 3y = -1
Matematika
ario39
Pertanyaan
Tentukan nilai x,y,dan z
X = 2y + 1
X + 2z = 7
Z - 3y = -1
1 Jawaban
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1. Jawaban santasenamalia1
X = 2y + 1
X + 2z = 7
Z - 3y = -1 +> z = 3y - 1
x + 2z = 7
2y +1 + 2(3y - 1) = 7
2y +6y = 7 -1 +2
8y = 8
y = 1
x = 2y + 1
x = 2(1) +1
x = 3
z = 3y - 1
z = 3(1) - 1
z = 2
jadi nilai x=3 y=1 dan z=2