Bài 3 :Tìm x a) x – 4/5 = 7/3 b) x x 2/3 = 5/6 – 1/2 (/ là phần)

a) x – 4/5 = 7/3

x = 7/3+4/5

x = 47/15

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b) x xx 2/3 = 5/6 – 1/2

x xx 2/3 = 1/3

x = 1/3 : 2/3

x = 1/2

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