Jawaban:
11
Penjelasan dengan langkah-langkah:
2x - y = 7 |×1|
x + 3y = 14 |×2|
menjadi
2x - y = 7
2x + 6y = 28 -
-7y = -21
y = 3
lalu
2x - (3) = 7
2x = 10
x = 5
sehingga
x + 2y = 5 + 2(3)
= 5 + 6
= 11
maaf kalau salah
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Jawaban:
11
Penjelasan dengan langkah-langkah:
2x - y = 7 |×1|
x + 3y = 14 |×2|
menjadi
2x - y = 7
2x + 6y = 28 -
-7y = -21
y = 3
lalu
2x - y = 7
2x - (3) = 7
2x = 10
x = 5
sehingga
x + 2y = 5 + 2(3)
= 5 + 6
= 11
maaf kalau salah