metode substitusi 2x-7y=4 danx-y=2
Matematika
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Pertanyaan
metode substitusi 2x-7y=4 danx-y=2
2 Jawaban
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1. Jawaban Ivanna24
2x - 7y = 4
x - y = 2
x = 2 + y
2x - 7y = 4
2 (2 + y) - 7y = 4
4 + 2y - 7y = 4
-5y = 4-4
-5y = 0
y = 0/-5 = 0
x = 2 + y
x = 2 + 0 = 2 -
2. Jawaban nurtahta
2x-7y=4
x-y=2
x-y=2=>x=2+y
2(2+y)-7y=4
4+2y-7y=4
-5y=4-4
-5y=0
y=0/-5=0
x-y=2
x-0=2
x=2+0=2
jadi x=2 dan y=0