Instructional Video

Khan Academy: Reasoning About Unknown Variables: Divisibility

Curated by ACT

Sal solves the following challenge: Given the positive integers a, b, and c, where a is a multiple of c and (a+b)/c is an integer. Is b necessarily a multiple of c? [3:38]

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Resource Details
Grade
9th - 10th
Subjects
Math
2 more...
Audiences
For Administrator Use
2 more...
Lexile Measures
0L