solve the equation 2/x+3/y=13 and 5/x-4/y=-2
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LET 1/X = A and Let 1/y = B
2a + 3b = 13
5a - 4b = -2
multiply equation 1 by 5 and equation 2 by 2
10a + 15b = 65
10a - 8b = -4
23b = 69
b = 3
a = 13 - 3b / 2
a = 13 - 9 / 2
a = 4/2
a = 2
therefore
1/x = a
1/x = 2
x = 1/2
1/y = b
1/y = 3
y= 1/3
solutions : x= 1/2 and y = 1/3
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