Answer:
9:7.
Explanation:
14 blue triangles and 18 yellow triangles,
The LCM of them both is 2 so we can divide both of the numbers by 2.
14 divided by 2 = 7
18 divided by 2 = 9
Since they asked for the ratio of yellow triangles to blue triangles,
The answer will be 9:7.
Hope that helps. x