Question

15x + 17y = 21; 17x + 15y = 11​

Answer 1

Answer: x = -2, y = 3

Step-by-step explanation: (refer to the attached image)

This is a special type of question because the coefficients of x1 and y2 are same; the coefficients of x2 and y1 are also same. So, instead of eliminating both equations normally, you can eliminate the sum and difference of both the equations instead. This method will be more simple and short.

Answer 2

Answer:

Step-by-step explanation:

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