Find the common solution for each system of equations?

Question

2y+4x=12
3x+y=5

problem 2
5x+6=y
4x-7=y

problem 3
y=3x+6
y=x-1

prob/ 4
2y+4x=6
y+3x=9

prob/ 5
y+4x=2
3x+y=2

prob/ 6
4x+3=y
3x-1=y

can u give me the answers for all the problems please

Answer 1

1. x = -1, y = 8
2. x = -13. y = -59
3. x = -7/2, y = -9/2
4. x = 6, y = -9
5. x = 0, y = 2
6. x = -4, y = -13