Question

15x+17y=21;17x+15y=11 then find value of x-y

Answer 1

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Answer 2

Answer:

X+Y=1

Step-by-step explanation:

15x+17y=21........(1)

17x+15y=11.........(2)

Adding equation (1)and(2)

15x+17y=21

+17x+15y=11

____________

32x+32y=32

Dividing both sides by 32 we get,

x+Y=1