Answer:
Remove 9 from triangle B to A
Step-by-step explanation:
Given
Three Triangles
A: 1,2,3
B: 7,8,9
C: 4,5,6
Required
Make their sum equal
First, we need to calculate the sum in each triangles;
Remove 9 from triangle B to A
At this point, we have:
<em>Hence, the solution is to remove 9 from B to A</em>