##### Admin

**Solve for x and y respectively**

**3x – 5y = 9**

**6x – 4y = 12**

**A. 3/4, 1****B. 3/4, -1****C. 4/3, -1****D. 4/3, 1**

**QUICK ANSWER…**

**C**

**SOLUTION****… **** **

**3x – 5y = 9 ………………………………..eq1**

**6x – 4y = 12 ………………………………eq2**

**Dividing through eq2 by 2, we have:**

**3x – 5y = 9 ………………………………..eq1**

**3x – 2y = 6 ………………….….….………eq2**

**Performing eq1 – eq2, we have:**

**(3x – 3x) + (-5y – (-2y)) = 9 – 6**

**0 + (2y – 5y) = 3**

**-3y = 3**

**Therefore, y = 3/-3 = -1**

**Substituting y = -1 into eq1, we have:**

**3x – 5y = 9**

**3x – 5(-1) = 9**

**3x + 5 = 9**

**3x = 9 – 5**

**3x = 4**

**Therefore x = 4/3**

**Hence, x = 4/3, y = -1**

**Now for the right answer to the above question:**

**Option A is incorrect.****Option B is incorrect.****C is correct.****D is not the correct answer.**

**QUICK TIPS…**

**You may please note the****se/this****:**

**Be careful with your handling of negative numbers.**

**You are free to add your own answers below this page to assist others improve their learning.**

**You can also click the golden ASK A QUESTION BOTTON down this page to raise new related questions… OUR COMMUNITY OF EXPERTS WILL BE MORE THAN HAPPY TO TACKLE IT…**

**/ culled from 2016 JAMB-UTME mathematics past question 21 /**

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