Question

if 15×17y=21 and 17×+11; then the value of x-y =​

Answer 1

Answer:

$x-y=-5$

Step-by-step explanation:

$15x+17y=21 - - - - (i)\\17x+15y=11 - - - -(ii)$

now , subtracting $(i)$ and $(ii)$

⇒

$-2x+2y=10\\-x+y=5\\x-y=-5$

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