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Substitution Method 3
Substitution Method 3
Khan Academy
Solving systems with substitution
1016
05:57
Practice using substitution for systems
Example doing Khan Academy systems of equations exercise at: http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/e/systems_of_equations_with_substitution
Khan Academy
Solving systems with substitution
1083
04:20
Example 1: Solving systems by elimination
Solving systems by elimination
Example 2: Solving systems by elimination
Solving systems by elimination 2
Addition Elimination Method 1
Addition Elimination Method 1
Addition Elimination Method 2
Addition Elimination Method 2
Addition Elimination Method 3
Addition Elimination Method 3
Addition Elimination Method 4
Addition Elimination Method 4
Example 3: Solving systems by elimination
Solving systems by elimination 3
Simple Elimination Practice
Practice solving systems of equations through simple elimination (exercise at http://www.khanacademy.org/math/algebra/systems-of-eq-and-ineq/e/systems_of_equations_with_elimination_0.5 )
Systems with Elimination Practice
Example of solving systems of equations with elimination
Counting with small numbers
Learn how to count squirrels and horses.
Khan Academy
Counting small numbers
674
00:55
Finding probablity example 3
Now we're working out the probability of randomly selecting a yellow marble from a bag of multi-colored marbles. Let's practice together.
Khan Academy
Basic probability
606
02:10
Finding probablity example
In order to find the probability of picking a yellow marble from a bag, we have to first determine the number of possible outcomes and how then many of them meet our constraints.
Khan Academy
Basic probability
563
02:55
Finding probablity example 2
In this example we are figuring out the probability of randomly picking a non-blue marble from a bag. Again, we'll have to think about the possible outcomes first.
Khan Academy
Basic probability
734
09:55
Counting in order
Learn how to count without making mistakes.
Khan Academy
Counting small numbers
290
01:57
Adding fractions with unlike denominators
Sal adds fractions like 3/4 and 1/5.
