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y -(-2) = 5/2(x -3)
y +2 = 5/2x -15/2 dikali 2 untuk menghilangkan penyebut, sehingga
2y +4 = 5x -15
2y = 5x -15 -4
2y = 5x -19
y+2 = 5/2(x-3)
y+2 = 5/2x - 15/2
dibagi 2 biar penyebutnya hilang
2y+4 = 5x - 15
2y = 5x - 15 -4 ⇨ 2y = 5x-19
atau
5x-2y-15-4 = 0
5x-2y-19 = 0