Jawaban:
10
Penjelasan dengan langkah-langkah:
Diketahui:
2a + 5b + 2c = 53
a + 3b + 4c = 39
a + 2b + c = 23
Eliminasi salah duanya
2a + 5b + 2c = 53 (×1)
a + 2b + c = 23 (×2)
= 2a + 5b + 2c = 53
2a + 4b + 2c = 46
————————— -
b = 7
= a + 3b + 4c = 39
b + 3c = 16 .............. (4)
maka b + 3c = 16
: 7 + 3c = 16
: 3c = 16 - 7
: 3c = 9
: c = 9/3 = 3
diketahui b = 7 dan c = 3
maka b + c = 7 + 3 = 10
semoga membantu
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Jawaban:
10
Penjelasan dengan langkah-langkah:
Diketahui:
2a + 5b + 2c = 53
a + 3b + 4c = 39
a + 2b + c = 23
Eliminasi salah duanya
2a + 5b + 2c = 53 (×1)
a + 2b + c = 23 (×2)
= 2a + 5b + 2c = 53
2a + 4b + 2c = 46
————————— -
b = 7
= a + 3b + 4c = 39
a + 2b + c = 23
————————— -
b + 3c = 16 .............. (4)
maka b + 3c = 16
: 7 + 3c = 16
: 3c = 16 - 7
: 3c = 9
: c = 9/3 = 3
diketahui b = 7 dan c = 3
maka b + c = 7 + 3 = 10
semoga membantu