You want the length of A's house if B's house is 14 m and the ratio of their lengths is 9 to 2.
Ratio
We can write the given relationship as ...
[tex]\dfrac{\text{length of A}}{\text{length of B}}=\dfrac{9}{2}=\dfrac{A}{14}\\\\\\14\times\dfrac{9}{2}=A\qquad\text{multiply by 14}\\\\63 = A\qquad\text{simplify}[/tex]
