Nilai x/y dari sistem persamaan 6/x-10/y=2 dan y/4-x/5=xy/20 adalah

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6/x – 10/y = 2 dan y/4 – x/5 = xy/20

nilai x/y = ??

6/x – 10/y = 2

→ (6y – 10x)/(xy) = 2

→ 6y – 10x = 2xy

→ 3y – 5x = xy

y/4 – x/5 = xy/20

→ (5y – 4x)/(20) = xy/20

→ 5y – 4x = xy

xy = xy

→ 5y – 4x = 3y – 5x

→ 2y = -x

→ x = -2y

→ x/y = -2

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