Question

2 x + y = 26
x-y=4 urgenteeeeeee​

Answer 1

Resposta:

Sistema? Se for

2x+y=26

x+y=4

----------

X+y=4

X=4-y

2(4-y)+y=26

8-2y+y=26

-2y+y=26-8

-y=18

y=18 x(-1)

y= - 18

X=4-y

X=4-(-18)

X=4+18

X=22

S={-18,22}