Question

Resolva cada um dos sistemas abaixo
A){2x+y=3
{X-y=1

B){2x+y=5
{X+y=1

C){4x+2y=4
{X-y=4

D){x+4y=0
{3x+2y=5

E) {2x/3+y=3
{2x+2y=1

F){x+y=27/9
{X-y=1

G){8x/2+y=5
{X+y=1

H){24x/6+4y/2=4
{X-y=4

Answer 1

A) 2(y+1)+y=3

2y+2+y=3

3y=3-1

y= 2/3

2x+2/3=3

2x=3-2/3

2x=7/3

x=7/6