Question

va rog urgent....... ​

Answer 1

Răspuns:

a)

$- \frac{1}{2} \times \frac{1}{5} + \frac{3}{5} \times \frac{3}{4} =$

$- \frac{1}{10} + \frac{9}{20} = \frac{7}{20}$

b)

$- \frac{1}{3} \times \frac{5}{2} + \frac{24}{49} \times \frac{21}{32} = - \frac{5}{6} + \frac{3}{7} - \frac{3}{4} =$

$- \frac{5}{6} + \frac{9}{28} = - \frac{43}{24}$

c)

$\frac{11}{36} \times ( - \frac{12}{11} ) \times ( - \frac{27}{22} )$

$\frac{1}{3} + \frac{11}{72} \times ( - \frac{27}{22} ) = - \frac{1}{3} - \frac{1}{8} \times \frac{3}{2} =$

$- \frac{1}{3} - \frac{3}{16} = - \frac{25}{48}$

d)

$\frac{1}{30} \times ( - \frac{15}{2} ) + ( - 4) \times ( - \frac{1}{12} )$

$- \frac{1}{2} \times \frac{1}{2} + \frac{1}{3} = - \frac{1}{4} + \frac{1}{3} = \frac{1}{12}$

Sper că te-am ajutat!