Question

solve this by elimination method ..class 10

Answer 1

Let 1/x be a and 1/y be b
then,
15a + 2b = 17.........eq1
a + b = 36/5..........eq2

Multiplying 15 to eq2 we have
15a + 15b = 108........eq3

Comparing eq1 and eq2 we get

15a + 2b = 17
15a + 15b = 108
—————————
-13b= -91
b= 7

Putting value of b in eq1
15a + 2(7)= 17
15a + 14= 17
15a = 3
a= 1/5

Now,
a= 1/x=1/5
x= 5

b=1/y= 7
y = 1/7

Answer 2

Here is your solution......
x = 15/31
and y = 1/7


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