Răspuns:
Explicație pas cu pas:
a) [tex]\frac{5}{42} -\frac{1}{210} +\frac{1}{42}\ =\frac{29}{210}[/tex]
b)
[tex]9 * \frac{8}{3} -\frac{13}{9}+\frac{3}{2} \\\\3*8-\frac{13}{9} +\frac{3}{2} \\\\24-\frac{13}{9} +\frac{3}{2}\\\\\frac{433}{18}[/tex]
