Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Find the variable value in the equation |
Grade: 7-a Lesson: S1-L1 |
Explanation: The best way to understand algebra is by looking at some examples. Take turns and read each example for easy understanding. |
Examples:
Step 1a
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Given equation is that, \$12b + 3 = 39\$ |
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Explanation:
Given equation is that, \$12b + 3 = 39\$. It is a linear equation with one variable in "b". |
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Step 1b
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Move the like terms to one side. |
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Explanation: Move the like terms to one side of the equation and perform operations among them. i.e, move constant terms to one side. \$12b = 39 - 3\$ |
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Step 1c
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Now, solve for "b" |
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Explanation:
Divide both sides of the equation with 12. ⇒ \$12b = 36\$ ⇒ \$(12b)/12 = 36/12\$ ⇒ \$((cancel12^1)b)/cancel12^1 = cancel36^3/cancel12^1\$ ⇒ \$(1b)/1 = 3/1\$ ⇒ \$b = 3\$ |
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