Question 1055558
.
The ages of three sisters are consecutive odd integers. Twice the age {{{highlight(cross(of_then_age))}}} of the youngest sister is one less 
than the oldest sisters? Only an algebraic solution will be accepted. Write a let statement too.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


<pre>
The sisters ages are n, n+2, and n+4.

The equation is

2n = (n+4) - 1.

2n = n +3  --->  n = 3.

<U>Answer</U>.  3, 5 and 7 years.
</pre>

It seems to me that the person who understand the meaning of the words "odd" and "consecutive" must solve it on his/her own 
without any difficulties.