Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Determine the value of algebraic expression |
Grade: 7-a Lesson: S2-L2 |
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 \$(121n^2)/11 + 11\$ when n = 1.
Step 1a
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Given expression. |
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Explanation:
Given expression \$(121n^2)/11 + 11\$ is an algebraic expression in variable n and value of n = 1. |
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Step 1b
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Substitute the value of variable |
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Explanation: Substitute the value of variable n = 1 in the expression. \$(121n^2)/11 + 11\$ \$=> (121(1)^2)/11 + 11\$ |
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Step 1c
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Perform the opreartions among the terms to determine the value of expression. |
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Explanation:
Perform operations among the terms \$=> (121(1)^2)/11 + 11\$ \$=> (121(1))/11 + 11\$ \$=> 121/11 + 11\$ \$=> (121 + 121)/11 \$ \$=> (242)/11 \$ |
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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 2 (or) do cancellation \$=> cancel(242)^(22)/cancel11^1\$ \$=> 22/1\$ \$=> 22\$ |
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