I got this from timing 24×3 and you may ask how do u times it together well first start off with 4×3 and u get 12 then times 3×2 and u get 6 + 1 more u get 7 so that's how I got 72 for answer
The marks through each of the sides of the triangle denote that all of the side lengths of the triangle are equal, or that it is an equilateral triangle. Therefore:
7x+9=x+27
6x+9=27
6x=18
x=3
Therefore, the correct answer is choice D. Hope this helps!
