Question

Resolva os sistemas:
a) X+y=2 X+y=2
5

Answer 1

X+y=2 X+y=25

x-y=2x+y=25

{x-y=25

{2x+y=25

3x=50

x=50/3

50/3-y=25

y=-25/3

(x,y)=(50/3, -25/3)