Question

Resolva os seguintes sistema lineares, por qualquer método​

Answer 1

a)

{3x+2y=3

{x-4y=1

{3x+2y=3 .4

{x-4y=1 .2

{12x+8y=12

{2x-8y=2

14x=14

x=1

3.1+2y=3

3+2y=3

2y=0

y=0

b)

{3x-y=13

{-2x+4y=-12

{3x-y=13 .4

{-2x+4y=-12 .1

{12x-4y=52

{-2y+4y=-12

10x=40

x=4

3x-y=13

3.4-y=13

12-y=13

-y=13-12

-y=1

y=-1