Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Determine the value of an expression |
Grade: 7-b Lesson: S3-L3 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Steps | Problem | Solution |
|---|---|---|
1 |
Determine the value of an expression at |
\$ xy + 1/(xy) \$ |
2 |
Now substitute the values \$x = -6\$ & \$y = 3 \$ in the expression |
\$ (-6)(3) + 1/(-6 * 3) \$ |
3 |
After multiplication |
\$ (-18) + 1/(-18) \$ |
4 |
After cancelation |
\$ -18 - 1/18 \$ |
5 |
Take LCM as '\$18\$' |
\$ (-324 - 1)/18 \$ |
6 |
After simplification |
\$ -325/18 \$ |
7 |
Answer |
C : \$ -325/18 \$ |
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