Răspuns:
[tex]1.a = - 2 \times ( - 1) = 2 \\ b = \frac{5}{6} \times \frac{3}{1} = \frac{5}{2} \\ a \times b = 2 \times \frac{5}{2} = 5[/tex]
[tex]1)a = \frac{2}{3} (7 - 4) = \frac{2}{3} \times 3 = 2[/tex]
1)) a=1/3*6=2
b=3-5+4=2
a/b=2/2=1
