Question

Find three consecutive odd natural numbers whose sum is $87$.

Answer 1

Let the number be $x,x+2,x+4$

According the the question,

$\begin{array}{c}x+\left(x+2\right)+\left(x+4\right)=87\\ 3x+6=87\\ 3x=81\\ x=\frac{81}{3}=27\end{array}$

$\therefore$ First number is $x=27$

Second number is $x+2=27+2=29$

Third number is $x+4=27+4=31$