[tex]7 \frac{1}{3} = \frac{7*3+1}{3} = \frac{22}{3} [/tex] cm
[tex]6,(2)= \frac{62-6}{9} = \frac{56}{9} [/tex] cm
6 cm
[tex]7,(8)= \frac{78-7}{9}= \frac{71}{9} cm[/tex]
[tex]\frac{22}{3}+\frac{56}{9} +6+\frac{71}{9}= \frac{22*3+56+6*9+71}{9} = \frac{66+56+54+71}{9}= \frac{247}{9} =27,(4) cm[/tex]
