Question

Himpunan penyelesaian dari x + 3y = 1 dan 2x - y = 9 adalah

Answer 1

Verified answer

MAPEL = MATEMATIKA
KELAS = 8
BAB = SPLDV

eliminasi nilai x
x + 3y = 1 |×2
2x - y = 9 |×1

2x + 6y = 2
2x - y = 9
_________-
7y = -7
y = -7/7
y = -1

subtitusi nilai y
x + 3y = 1
x + 3(-1) = 1
x + -3 = 1
x = 1 + 4
x = 5

hp = { 5, -1}

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