Question

Ajutatima si pe mine cu astea :
1) [1,(6)+0,25]:1,91(6)
2) 2 pe 3 + 7 pe 5 +4 pe 15

Answer 1

1) 1.(6)=(16-1)/9=15/9=5/3. 0.25=25/100=1/4. 1.91(6)=(1916-191)/900=1725/900=69/36.⇒ [5/3+1/4]:69/36=(20+3)/12*36/69=23/12*36/69=1.  2) 2/3+7/5+4/15=(10+21+4)/15=35/15=7/3