maths
posted by JERMAINE .
solve the following simultaneous equation:
5x+2y=29
xy=4
2xy=1
3xy=2
5x+y=16
x2y=1
5x+2y=16
3x+4y=7
3x+2y=19
5x2y=5
7x1/32(7y+3)/5=10/3
5x+2/4+3y2/5=16/5

I'll show you how to do the first oner. You try the others using the same method.
5x +2y = 29
x  y = 4
Double the last equation (both sides)
2x 2y = 8
Add the first and third equations.
7x = 21
x = 3