Simultaneous Equations

Question 1:

7x 4y = 52 5x 6y = 45
x=6 y=-2.5

Question 2:

7x +7y = 0 3x 3y = -57
x=-9.5 y=9.5

Question 3:

7x +4y = 30 8x 6y = 103
x=8 y=-6.5

Question 4:

6x +6y = 90 4x 5y = 15
x=10 y=5

Question 5:

4x +2y = 34 2x +8y = 3
x=9.5 y=-2

Question 6:

4x 3y = -46 x +3y = 26
x=-4 y=10