Question

Determine X e Y pelo método de adição

Answer 1

vamos là.

x + y = 26

x - y = 4

2x = 30

x = 30/2

x = 15

15 + y = 26

y = 11

S = (15, 11)

Answer 2

Resposta:

(x,y)=(15,11)

Explicação passo-a-passo:

[ x+y=26

[x-y=4

[x-y=4

[x-y=4

x-y=4

x-y+y=4+y

x=4+y

[x+y=26

[x-y=4

[x+y=26

[y=4+y

4+y+y=26

4+2y=26

2y=26-4

2y=22

y=11

4+y+y=26

y=11

y=4+11

x=15

(x,y)=(11,11)

[15+11=26

[15-11=4

[26=26

[11-11=4

[15+11=26

[15-11=4

[26=26

[4=4

[15+11=26

[15-11=4

[26=26

[4=4

(x,y)=(15,11)

resposta

(x,y)=(15,11)