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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to solve an absolute value problem in algebra and graph your answer on a number line.
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How To: Remember "greater than" & "less than" symbols

How To: Calculate Faster Than a Calculator

How To: Find the 100th term in a sequence

How To: Find and sketch the domain of a multivariable function

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

How To: Write a logarithm as a sum or difference of logarithms

How To: Identify characteristics of a sample during a survey

How To: Find the Radius of a Circle from Arc Length

How To: Solve for the missing ratios or proportions

How To: Find the Percent Given Two Numbers

How To: Calculate percent composition for chemistry

How To: Find the area of a circle when you know the diameter

How To: Find the standard deviation with the ZScore formula

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

How To: Solve percentages without a calculator

How To: Express inequalities using interval notation

How To: Square expressions involving radicals

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

How To: Find extra points for a parabola (quadractic equation)
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