Question

1:a=-7:30 a:4+a:5-a:3​

Answer 1

Объяснение:

$\ \frac{a}{4} + \frac{a}{5} - \frac{a}{3} = \frac{15 a+ 12a - 20a}{60} = \frac{7a}{60}$

$\frac{7 \times \frac{ 30}{ - 7} }{60} = \frac{ - 30}{60} = - \frac{1}{2}$

Answer 2

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