Question

{2(x+1)-x=3y+6 {2x-5=4y+4

Answer 1

Resposta:

Explicação passo-a-passo:

(i){2(x+1)-x=3y+6

(ii){2x-5=4y+4

(i){2(x+1)-x=3y+6

(i)  2x + 2 - x = 3y + 6

(i)  x - 3y = 6 - 2

(i)  x - 3y = 4

(ii) 2x-5=4y+4

(ii) 2x - 4y = 4 + 5

(ii) = 2x - 4y = 9

(i)  { x - 3y = 4  *(-2)

(ii) { 2x - 4y = 9  

(i)  -2x + 6y = - 8

(ii)  2x - 4y = 9  

2y = 1

y = 1/2

(ii) { 2x - 4y = 9

2x - 4(1/2) = 9

4x - 4 = 18

4x = 18 + 4

4x = 22

x = 22/4

x = 11/2

x = 11/2

y = 1/2