x plus 1/5 of y is 14, and sum of 1/2 of x and i/5 of y is 5
Solve for x and y

Question

anonymous · Answer

1
x + --y = 14          ---------(1)
        5
 1         1
--x + --y = 5        ---------(2)
 2         5

multiply (1) throughout by 5 and (2) by 10

5x +   y = 70          --------(3)
5x + 2y = 50          --------(4)

subtract (4) from (3), to get

 -y = 20
y = -20

now substitute y = -20 in (3)
5x + (-20) = 70
5x - 20 = 70
5x = 70 + 20
x = 90/5
x = 18

so solution (x,y) = (18, -20)

anonymous · Answer

Hermph thats why I got the answer wrong...Thanks.

anonymous · Answer

whenever u hv fractions, follow the above procedure to get rid of them....☺

anonymous · Answer

:)