Question

resolva por escalonamento 2x - 3y=11 e 1x + 2y=2

Answer 1

2x - 3y=11
1x + 2y=2

1x + 2y=2
x = 2 - 2y

2x - 3y=11
2 (2-2y) - 3y = 11
4-4y-3y = 11
-4y-3y = 11-4
-7y=7
y = -1

x = 2 - 2y
x = 2 -2(-1)
x = 2+2
x = 4

Answer 2

2x - 3y=11

1x + 2y=2

1x + 2y=2

x = 2 - 2y

2x - 3y=11

2 (2-2y) - 3y = 11

4-4y-3y = 11

-4y-3y = 11-4

-7y=7

y = -1

x = 2 - 2y

x = 2 -2(-1)

x = 2+2

x = 4