2x+2y=1
This one is obvious. Just divide the coefficients by each other, and take any inequalities and subtract them by themselves.
3x-y=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.
solve the system of linear equations
2x+2y=1
3x-y=6
thanks
3 answers
2x+2y=1
6x-2y=12
-4x=-11
x= 11/4
2(11/4)+2y=1
1-22/4=2y
-18/4=2y
-18/8=y
6x-2y=12
-4x=-11
x= 11/4
2(11/4)+2y=1
1-22/4=2y
-18/4=2y
-18/8=y
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
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
1 answer