Question

determine the value of x and y ​

Answer 1

Answer:

x = 5; y = 11.

Solution:

40/x + 55/y = 13.

30/x + 44/y = 10.

Take 1/x = a; 1/y = b.

40a + 55b = 13 ---> equation 1.

30a + 44b = 10 ---> equation 2.

Multiply equation 1 by 30 and equation 2 by 40.

120a + 1650b = 390 ----> 3.

120a + 1760b = 400 ----> 4.

Subtract equation 3 and equation 4.

Answer 2

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