Lesson Topics Discussion Quiz: Class Homework |
Steps-3 |
Title: Linear Equations with Two Variables |
Grade Lesson s5-l2 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Quiz: Discussion Step
Id | Type | Name | Note |
---|---|---|---|
1 |
Problem |
Solve the following system of equations using the cross multiplication method: 5x - y = 11 and 3x + 2y = 4. |
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2 |
Step |
The given equation - 1 is: |
5x - y = 11 |
3 |
Step |
The given equation - 2 is: |
3x + 2y = 4 |
4 |
Step |
Multiplying equation 1 by 2 produces equation 3: |
10x - 2y = 22 |
5 |
Step |
Combine equation 1 and 3 into a single expression: |
10x - 2y = 22 3x + 2y = 4 |
6 |
Step |
After simplification: |
13x + 0 = 26 |
7 |
Step |
Find the x value: |
13x = 26 x = 2 |
8 |
Step |
Replace the x value in the equation - 1, then solve for y: |
10 - y = 11 y = - 1 |
9 |
Solution |
So, therefore the values of x = 2 and y = 1. |
|
10 |
Sumup |
Please summarize steps |
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Choices |
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11 |
Choice-A |
After solving the system of equations, we found x = 2 and y = −1. Therefore, this option is incorrect |
Wrong x = 2 and y = 0 |
12 |
Choice-B |
This option is incorrect as it doesn’t match the solutions we found x = 2 and y = -1 |
Wrong x = 5 and y = -1 |
13 |
Choice-C |
This option suggests the solution is x = 2 and y = -1. After solving the system of equations, we indeed found that x = 2 and y = -1, so this option is correct |
Correct x = 2 and y = - 1 |
14 |
Choice-D |
This option suggests the solution is x = -7 and y = 3. After solving the system of equations, we found that x = 2 and y = -1. Therefore, this option is incorrect |
Wrong x = -7 and y = 3 |
15 |
Answer |
Option |
C |
16 |
Sumup |
Please summarize choices |
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