Simultaneous Equations

Question 1:

5x 5y = -25 x 5y = -37
x=3 y=8

Question 2:

5x +5y = 60 4x +5y = 50
x=10 y=2

Question 3:

3x 4y = 0 3x +2y = 18
x=4 y=3

Question 4:

2x +3y = 29 5x +3y = 32
x=1 y=9

Question 5:

2x 5y = -20 4x 5y = -10
x=5 y=6

Question 6:

x +4y = 34 4x +4y = 52
x=6 y=7