a) [tex]\dfrac{12+18+24}{3}[/tex]=[tex]\dfrac{54}{3}[/tex]=simplifici cu 3=18
b) [tex]\dfrac{[tex]\dfrac{1}{2}+{3}{4}+{2}{5}+{1}{6}}{4}[/tex]=[tex]\dfrac{109}{240}[/tex]
c) [tex]\dfrac{0,30+1,20+4,5}{3}[/tex]=[tex]\dfrac{6}{3}[/tex]=2
d) [tex]\dfrac{24+[tex]\dfrac{5}{2}+3,5+1,(3)}{4}[/tex]=[tex]\dfrac{188}{32}[/tex]=simplifici cu 4=[tex]\dfrac{47}{6}[/tex]