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Example 1: Solving systems by substitution

Solving systems by substitution 1

Khan Academy
Solving systems with substitution
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Substitution method 3

Substitution Method 3

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Solving systems with substitution
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Substitution method 2

Substitution Method 2

Khan Academy
Solving systems with substitution
556
03:43

The substitution method

The Substitution Method

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Solving systems with substitution
480
04:38

Example 3: Solving systems by substitution

Solving systems by substitution 3

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Solving systems with substitution
556
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Example 2: Solving systems by substitution

Solving systems by substitution 2

Khan Academy
Solving systems with substitution
509
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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
552
04:20