Question

1 и 3 пример СРОЧНО
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Answer 1

1)

$\frac{3 {x}^{2} }{5 {y}^{3} } \div \frac{27 {x}^{5} }{2 {y}^{4} } \times \frac{5y}{3(x - 1)} = \frac{3 {x}^{2} \times 2 {y}^{4} \times 5y }{5 {y}^{3} \times 27 {x}^{5} \times 3(x - 1) } = \\ = \frac{2 {y}^{2} }{27 {x}^{3} (x - 1)} = \frac{2 {y}^{2} }{27 {x}^{4} - 27 {x}^{3} }$

3)

$\frac{28 {p}^{4} }{15 {q}^{3} } \times \frac{5 {q}^{2}(p + 1) }{14 {p}^{2} } \div \frac{3 {p}^{2} }{4 {q}^{4} } = \frac{28 {p}^{4} \times 5 {q}^{2} (p + 1) \times 4 {q}^{4} }{15 {q}^{3} \times 14 {p}^{2} \times 3 {p}^{2} } = \\ = \frac{8 {q}^{3}(p + 1) }{9} = \frac{8 {q}^{3} p + 8 {q}^{3} }{9}$