Khanacademy teaches us how to handle simple inequalities (less than or more than). In an equation, we usually have one solution. In problems involving inequalities, there is a whole set of answers. For instance, x minus five is less than 35. The answer for x is a whole series of numbers that when five is taken away from it, is less than 35. This equation is handled like any other equation involving an equal sign. We add five on both sides of the equation and the answer for x is any number that is less than 40 (35 plus five). To help us visualise the problem, a number line is used to illustrate the solution.
 Hot
 Latest

How To: Understand the rule of vertically opposite angles

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

How To: Divide small numbers by big numbers

How To: Do long division without a calculator

How To: Calculate the growth rate or percentage change between two numbers

How To: Solve exponential and logarithmic equations

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

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

How To: Find a number given Its percent

How To: Convert between diameter and radius

How To: Find the slope from a set of points

How To: Determine the age of a fossil using carbon14

How To: Square expressions involving radicals

How To: Calculate percentage growth rates in calculus

How To: Find the volume of a cylinder with given radius

How To: Solve word problems involving the addition of whole numbers

How To: Find a missing angle outside of a triangle

How To: Calculate percent composition for chemistry

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

How To: Understand the rule of vertically opposite angles

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

How To: Divide small numbers by big numbers

How To: Do long division without a calculator

How To: Calculate the growth rate or percentage change between two numbers

How To: Solve exponential and logarithmic equations

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

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

How To: Find a number given Its percent

How To: Convert between diameter and radius

How To: Find the slope from a set of points

How To: Determine the age of a fossil using carbon14

How To: Square expressions involving radicals

How To: Calculate percentage growth rates in calculus

How To: Find the volume of a cylinder with given radius

How To: Solve word problems involving the addition of whole numbers

How To: Find a missing angle outside of a triangle

How To: Calculate percent composition for chemistry

How To: Find the Radius of a Circle from Arc Length
Be the First to Comment
Share Your Thoughts