Lesson Example Discussion Quiz: Class Homework |
Example |
Title: Substitute the varible value in the fractional expression |
Grade: 8-a Lesson: S2-L3 |
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 \$(2k + i - 3t)/(25t)\$ when i = 4, k = 3 and t = 2.
Step 1a
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The given expression is, \$(2k + i - 3t)/(25t)\$. |
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Explanation:
The given expression is, \$(2k + i - 3t)/(25t)\$. The expression contains variable in 'k', 'i' and 't' and i = 4, k = 3 and t = 2 |
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Step 1b
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Substitute the values of the variables in the expression. |
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Explanation:
Substitute the values of the variables and perform operations. ⇒ \$(2k + i - 3t)/(25t)\$ ⇒ \$(2(3) + (4) - 3(2))/(25(2))\$ Perform operations according to PEMDAS rule. ⇒ \$(6 + 4 - 6)/(50)\$ ⇒ \$(10 - 6)/(50)\$ ⇒ \$4/(50)\$ |
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Step 1c
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Reduce the fraction in to it’s lowest form |
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Explanation: Divide numerator and denominator by 2 ⇒ \$cancel4^2/cancel50^(25)\$ ⇒ \$2/25\$ |
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