Question

-x+y=1
x+y=11

Answer 1

Using elimination

Answer 2

-x+y=1
x+y=11

2y = 12
y=6

Answer 3

plug in 6 in the place of y
x + 6 = 11
x = 5

Answer 4

Is the problem finish

Answer 5

yes

Answer 6

-x+3y=6
x+3y=18
Using elimination

Answer 7

same thing, add together
-x+3y=6
x+3y=18

6y = 24
y = 4

x + 12 = 18
x = 6

Answer 8

x+4y=-8
x-4y=-8

Answer 9

Using elimination

Answer 10

This time is the same thing but with y
x+4y=-8
x-4y=-8
x = -16

-16 + 4y = -8
4y = -24
y = -6