Pls solve Q7 i

Pls solve Q7 i 25 8-50 3x-2y 3X+4y = 45 7. Solve : = 2xy x — y = 6xy (ii) x + y = 7xy 2x-3y=-xy (i) Dividing both the sides of each equatio by xy, we get : x

Dear Student,

x+y = 2xyx-y = 6xy______________2x     = 8xy2x-8xy=02x(1-4y) = 0x(1-4y)=0 x = 0          or      1-4y = 0x=0             or      4y = 1 x = 0         or          y = 14Now,When x=0x+y=2xy 0+y = 2*0*y y=0And,When y = 14x+y=2xy x+14 = 2*x*(14)x+14=x2x-x2 = -142x-x2 = -14 x=2*-14 = -12Therefore, There are 2 possible cases (x=0;y=0)  and (x=-12;y=14)

Regards

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