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Verified answer
Kelas 8 MatematikaBab SPLDV
x - 3y - 5 = 0
x = 3y + 5
2x - 5y = 9
2 (3y + 5) - 5y = 9
6y + 10 - 5y = 9
y = 9 - 10
y = -1
x = 3y + 5
x = 3 . (-1) + 5
x = -3 + 5
x = 2
3x + 2y
= 3 . 2 + 2 . (-1)
= 6 - 2
= 4