Tìm x a) x * 3/7 = 1 - 5/8 b) 8/3 - x = 9/10

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Bài 4. Tìm x

a) \( x \times \frac{3}{7} = 1 - \frac{5}{8} \)

b) \( \frac{8}{3} - x = \frac{9}{10} \times \frac{5}{3} \)

c) \( x : \frac{5}{9} = 2 - \frac{11}{8} \)

d) \( x \times \frac{2}{2} + x \times \frac{7}{2} = \frac{11}{4} \)