Question

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ques 9

Answer 1

let 1/x =a and 1/y = b
3a+8b=-1
a-2b =2
a=2+2b
3(2+2b) +8b =-1
6+6b+8b =-1
14b =-1-6
14b =-7
b =-1/2
1/y =-1/2
y=-2
a =2 +2×-1/2
a=2-1
a=1
1/x =1
x =1
mark it as a brainielist answer

Answer 2

3/x+8/y = -1
3/x = - 1 - 8/y
1/x = -1 -8/y÷3.....(1)
next
1/x - 2/y = 2
1/x = 2+2/y....(2)
comparing 1 and 2
-1 -8/y÷3 = 2+2/y
6y+6= -y -8
6y+y = -8 -6
7y= -14
y= -2......(3)
then
3/x+8/y= -1
3/x+8/-2= -1
3/x - 4= -1
3/x= -5
-5x=3
x= -3/5