Question

resolva os sistemas:

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

2- x=5 -3y
2x - y = - 4

3- 3x + y =5
2x - y = - 4

4- x - y =5
x+ y = 7

5- x +2y =7
x - 2x = -5

6- 3x +5y =11
2x - y =16

7- 5x - y =4
2x -y = - 5

8- x= 9 - 3y
3x + 2y = 6

Answer 1

1_x+y=11
x-y=3
2x=14
x=14÷2
X=7