From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find answers to rational equation problems in algebra.
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How To: Find the Percent Given Two Numbers

How To: Remember "greater than" & "less than" symbols

How To: Calculate Faster Than a Calculator

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the area of a parallelogram using geometry

How To: Find a number given Its percent

How To: Find a missing coordinate given: coordinate & equation

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

How To: Learn Calculus in 20 minutes

How To: Solve singlestep equation by taking the reciprocal

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Do long division without a calculator

How To: Divide small numbers by big numbers

How To: Calculate the height and volume of a pyramid

How To: Convert fractions to percents in two steps

How To: Do long division with decimals

How To: Find points of intersection in different equations

How To: Rewrite expressions with the distributive law of multiplication

How To: Determine the age of a fossil using carbon14

How To: Find the area of a triangle when given 2 sides & angle
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