Need to know how to figure out the least common multiple or LCM of two given numbers? 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 calculate the LCM of two numbers.
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How To: Apply the fundamental rule of proportions

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

How To: Find a number given Its percent

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

How To: Subtract a mixed number from a proper fraction in basic math

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Derive the basic area of a triangle

How To: Calculate Faster Than a Calculator

How To: Calculate percent composition for chemistry

How To: Calculate the area of a parallelogram

How To: Solve problems involving functions in algebra

How To: Find the area & perimeter of triangles & squares

How To: Subtract fractions and mixed numbers

How To: Do long division without a calculator

How To: Find the Percent Given Two Numbers

How To: Divide small numbers by big numbers

How To: Identify characteristics of a sample during a survey

How To: Solve equations with the order of operations

How To: Find the area of irregular shapes

How To: Find patterns in arithmetic sequences
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