Question

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дам100баксов​

Answer 1

1)

$\frac{ - 2x}{ - 5y} = - ( - \frac{2x}{5y}) = \frac{2x}{5y}$

2)

$\frac{8 {c}^{2} }{ - 15x} = - \frac{8 {c}^{2} }{15x}$

3)

$- \frac{ - 3m}{4n } = - ( - \frac{3m}{4n} ) = \frac{3m}{4n}$

4)

$- \frac{ - a}{ - b} = - ( - ( - \frac{a}{b} )) = - \frac{a}{b}$

5)

$- \frac{3 {a}^{2} b}{ - 10m} = - ( - \frac{3 {a}^{2} b}{10m} ) = \frac{3 {a}^{2} b}{10m}$

6)

$- \frac{ - 5ab}{8cd} = - ( - \frac{5ab}{8cd} ) = \frac{5ab}{8cd}$