Grades 7-8 Video Solutions 2026-2026_7-8

2026_7-8_20

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Video Summary

The puzzle is solved by considering carries in the addition. Assuming no carry leads to a contradiction, so there must be a carry from the ones place. Working through the columns gives \(a = 3\), \(c = 7\), and \(b = 6\). Therefore, \(a + b + c = 3 + 6 + 7 = 16\). The answer is 16.