This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
Let's find the pattern in the given triangles. We will denote the numbers on the two bottom sides as S_1 and S_2, and the internal number as I. For the second triangle (middle): The numbers on the bottom sides are S_1 = 5 and S_2 = 5. The internal number is I = 15. Let's test the pattern: I = S_1 + S_2 + S_1. I = 5 + 5 + 5 = 15 This pattern works for the second triangle. For the third triangle (bottom, based on previous context): The numbers