Question

1,(69) ÷ 1,(7) + 0,5 =?
va rog rezolvarea​

Answer 1

$1.(69) \div 1.(7) + 0.5 =$

$= 1 \frac{69}{99} \div 1 \frac{7}{9} + \frac{5}{10} =$

$= 1 \frac{23}{33} \div 1 \frac{7}{9} + \frac{1}{2} =$

$= \frac{56}{33} \div \frac{16}{9} + \frac{1}{2} =$

$= \frac{56}{33} \times \frac{9}{16} + \frac{1}{2} =$

$= \frac{21}{22} + \frac{1}{2} =$

$= \frac{21}{22} + \frac{11}{22} =$

$= \frac{32}{22} = \frac{16}{11}$