Răspuns:
a)
[tex]6.(3) = 6 \frac{3}{9} = 6 \frac{1}{3} = \frac{19}{3 } [/tex]
[tex] \frac{19}{3} \times ( - \frac{1}{38} ) = - \frac{1}{6} [/tex]
b)
[tex] - 1\frac{3}{4} = - \frac{7}{4} [/tex]
[tex] - 4 \frac{2}{3} = - \frac{14}{3} [/tex]
[tex] - \frac{7}{4} \times ( - \frac{3}{14} ) = \frac{3}{8} [/tex]
c)
[tex]4 \sqrt{2} \div 2 = 2 \sqrt{2} [/tex]
d)
[tex]20 \sqrt{3} \div ( - 4) = - 5 \sqrt{3} [/tex]
e)
[tex] - \frac{ \sqrt{5} }{2} \times \frac{1}{5} = - \frac{ \sqrt{5} }{10} [/tex]
