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1] If 5x+7y=17; 7x+5y=19, then find the value of (x-y).A]2 B] 4 C] 1 D] 7 ​

Answer»

X-Y=1

Step-by-step explanation:

5x+7y=17----(i)

7x+5y=19----(II)

subtracting (i) from (ii) we get

2x-2y=2

dividing WHOLE EQUATION by 2 we get

x-y=1

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