Question

Efectuează dau vă rog este urgent ​

Answer 1

Răspuns:

a)

$\frac{2}{5} + \frac{3}{4} = \frac{8}{20} + \frac{15}{20} = \frac{23}{2.}$

b)

$\frac{3}{7} x( \frac{2}{5} + \frac{3}{4} ) = \frac{3}{7} \times ( \frac{8}{20} + \frac{15}{20}) = \frac{3}{7} \times \frac{23}{20} = \frac{69}{140}$

c)

$\frac{3}{7} \times \frac{5}{2} = \frac{15}{14}$

d)

$\frac{3}{7} \times \frac{3}{4} = \frac{9}{28}$

e)

Answer 2

Explicație pas cu pas:

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