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Solution


Q.

If 2x + 3y = 15 and 3x + 2y = 25, then the value of x – y is
1 –10     
2 8  
3 10  
4 –8  

Ans.

(3)

Given linear equations, we have:

2x + 3y = 15    ...(i)
3x + 2y = 25    ...(ii)

Subtracting (i) from (ii), we get:
x – y = 25 – 15
⇒ x – y = 10