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= y - 3 : -5 - 3 = x - 0 : 2 - 0
= y - 3 : -8 = x : 2
perkalian silang
= y-3(2) = -8 × X
= 2y - 6 = -8x
= 8x + 2y = 6
= 4x + y = 3 (b)
menjadi
atau