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Tough equations no.1
Algebra
Level 2
Solve for x
Submit
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
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
Your answer
seems reasonable.
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That seems reasonable.
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