Question

x mais y igual menos 2 2x menos y igual 26

Answer 1

x+y=2
2x-y=26
1 passo some as duas equacoes
x+2x+y+(-y)=2+26
3x=28
x=28/3
2 passo agora com o valor de x substitua na equacao acima
28/3+y=2
y=-22/3

Answer 2

x+y= -2
2x-y=26

x= -2-y

2.(-2-y)-y=26
-4-2y-y=26

-4-3y=26
-3y=26+4
-3y=30
y=30÷ -3
y= -10

x+(-10)= -2
x-10= -2
x= -2+10
x= 8

x=8 e y= -10
___________
SUBSTITUINDO OS TERMOS-

8+(-10)=
8-10
= -2

2.8-(-10)
16+10
=26