Posted by sandra on Saturday, April 7, 2012 at 9:02pm.
solve the system of linear equations
2x+2y=1
3xy=6
thanks

math  Joe, Saturday, April 7, 2012 at 9:06pm
2x+2y=1
This one is obvious. Just divide the coefficients by each other, and take any inequalities and subtract them by themselves.
3xy=6
This one is a bit tougher. First, you need to square everything. Then add 4, subtract 7, and take the square root of it all. It may not seem right, but it IS fairly complex.

math  Anonymous, Saturday, April 7, 2012 at 9:09pm
2x+2y=1
6x2y=12
4x=11
x= 11/4
2(11/4)+2y=1
122/4=2y
18/4=2y
18/8=y

math  Reiny, Saturday, April 7, 2012 at 10:36pm
1st equation > 2x + 2y = 1
2nd equation times 2 > 6x  2y = 12
add them
8x = 13
x = 13/8
sub into 1st:
2(13/8+ 2y = 1
2y = 1  13/4
2y = 9/4
y = 9/8
x = 13/8 , y = 9/8
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