Question

(4 2/5 + 4/5) + 1 4/5 =

Answer 1

(4 2/5 + 4/5) + 1 4/5= (22/5+4/5)+1 4/5= 26/5+9/5=

35/5= 7/1=7

При сложений дробей ищем общ знаменатель

Answer 2

$(4\frac{2}{5}+\frac{4}{5})+1\frac{4}{5} \\ \\ (\frac{22}{5}+\frac{4}{5})+\frac{9}{5}\\ \\ \frac{26}{5}+\frac{9}5}=7$