Solve for y
x+y=50
y=50-x
x+y=7
x=7-y
y=3x+6
3
y=5/3x+5
5
x+y=22
22
2x+2y=38
y=19-x
2x+2y=14
x=7-y
y=14-2/3x
-2/3
y=18-5x
18
2x+2y=26
13
2x+3y=36
y=12-2/3x
3x+2y=24
x=8-2/3y
3y=15-6x
-2
2x+3y=27
9
3x+4y=-39
-13
3x+5y=27
y=27/5-3/5x
3x+4y=17
x=17/3-4/3y
2x+2y=18
-1
4x-3y=42
-14
5x-6y=47
47/5
4x-3y=35
y=4/3x-35/3
4y-5x=23
x=4/5y-23/5
3x+4y=16
-3/4
3x-5y=38
-38/5
7y-9x=87
-87/9