Question

Si x+y / x-y = 7 / 4 calcula el valor de X / y

Answer 1

x + y = 7 —> x = 7 - y
x - y = 4

x - y = 4
(7 - y) - y = 4
7 - 4 - 2y = 0
3 = 2y
y = 3/2 = 1,5

x = 7 - 3/2
x = 11/2 = 5,5