Question

Resolva os seguintes sistemas :

Answer 1

Resposta:

g) x = 8 - y

4/ x - 2y = 2

4/8 - y -2y = 2

4/ 8 -3y = 2

16 -6y = 4

-6y = -12

y = -12/-6

y = 2

x + y = 8

x + 2 = 8

x = 8 - 2

x = 6

h)

6x + 6y = 10x

6y = 10x - 6x

6y = 4x

y = 4x/6

y = 2x/3

2/x - y = 2

2/x -2x/3 = 2

2/(x/3) = 2

2x/3 = 2

2x = 6

x = 3

x/x + y = 6/10

3/3 + y = 6/10

30 = 18 + 6y

18 + 6y = 30

6y = 30 - 18

y = 12/2

y = 2