Question

5)resolva o sistema a seguir
1/x+1/x=7
1/x-1/y=-3​

Answer 1

{1/x +1/y=7 ===> retifiquei.

{1/x -1/y=-3

-------------------- (+)

2/x = 4

4x = 2

x= 2/4= 1/2 ✓

{1/x+1/y=7

2 +1/y=7

1/y= 5

y = 1/5 ✓