Question

Dau ❤︎ + ★ va roog vreau cu operatii (ps e de clasa 6-a)
1).............. si celelalte​

Answer 1

$\frac{5}{21} \times ( - 19.63) + \frac{5}{21} \times ( - 1.37) = \frac{5}{21} \times ( - \frac{1963}{100} ) + \frac{5}{21} \times ( - \frac{137}{100} ) = - \frac{1}{21} \times \frac{1963}{20} - \frac{1}{21} \times \frac{137}{20} = - \frac{1963}{420} - \frac{137}{420} = - 5$