Simultaneous Equations

Question 1:

x +2y = 16 x +5y = 34
x=4 y=6

Question 2:

4x +2y = 30 4x +4y = 36
x=6 y=3

Question 3:

x 3y = -19 3x 3y = -9
x=5 y=8

Question 4:

3x 2y = -4 x 2y = -8
x=2 y=5

Question 5:

x y = -5 3x y = -1
x=2 y=7

Question 6:

x +2y = 17 5x +2y = 53
x=9 y=4