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Excel in math and science
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Basic Mathematics
Fractions
Excel in math and science
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It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
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Concept Quizzes
If \(\displaystyle \frac{a}{b} = \frac{3}{14},\) what is \(\displaystyle \frac{b-a}{b+a}?\)
Excel in math and science
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It's hard to learn from lectures and videos
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Our wiki is made for math and science
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by Brilliant Staff
If \(\displaystyle \frac{x^2+8x-9}{x^2-8x-9} = \frac{x+9}{x-9},\) what is \(x?\)
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
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Our wiki is made for math and science
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by Brilliant Staff
If \( \frac{a-b}{a+b} = \frac{ 3} { 8 } \), then find the value of
\[ \frac{ 5a + 3b } { 5a - 3b }. \]
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, conceptual quizzes.
Our wiki is made for math and science
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If \(\displaystyle \frac{\sqrt{7}+x}{\sqrt{7}-x} = 7,\) what is \(x?\)
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, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
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If \(\displaystyle \frac{20+x}{20-x} = 4,\) what is \(x?\)
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, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
examples, and problems from the community.
Used and loved by 4 million people
Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.
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That seems reasonable.
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by Brilliant Staff