Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Substitue the variable value using different methods in the expression |
Grade: 6-a Lesson: S2-L7 |
Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
1. Determine the value of expression \$(5 + 2r)/r\$ when r = 5.
Step 1a
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Given expression. |
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Explanation:
Given expression \$(5 + 2r)/r\$ is an algebraic expression in variable r and value of r = 5. |
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Step 1b
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Perform operations. |
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Explanation: Substitute the value of variable r = 5 in the expression. \$(5 + 2r)/r\$ \$=> (5 + 2(5))/(5)\$ |
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Step 1c
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substitute the value of variable and determine the value of expression. |
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Explanation:
Perform operations among the terms \$ (5 + 2(5))/(5)\$ \$=> (5 + 10)/(5)\$ \$=> (15)/(5)\$ |
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Step 1d
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Convert the fraction into it’s lowest form. |
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Explanation: Divide numerator and denominator with 5 (or) do cancellation \$=> cancel(15)^3/cancel(5)^1\$ \$=> 3/1\$ \$=> 3\$ |
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