Question

Determine o valor do x e y que satisfazem 2x+y=10
4x-2y=4

Answer 1

2x+y=10 (-2) *distributiva
4x-2y= 4

-4x-2y= -20
4x-2y= 4

-4y= -16
y= -16/-4= 4 y= 4


2x+4= 10
2x=10-4
2x=6
x= 6/2= 3 x= 3