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An algebra problem by Alisha Lal

Algebra Level 1

Maria is 12 years old. The sum of the ages of Maria and John is 60. How old is John?

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

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including olympiad champions, researchers, and professionals.

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by Alisha Lal

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