小红今年7岁,妈妈33岁,当妈妈40岁时,小红几岁?7I4c:n,F7?;K(G7f9Q7Y
算式:提示-K5y8L7Q-k(T,v6k7p-o'E,E+z5C'R7I4c:n,F7?;K(G7f9Q7Y
答;当妈妈40岁时,小红-s4m4U2y,o/L5D1?,F岁。7I4c:n,F7?;K(G7f9Q7Y