l x - 2 l = 3
x = 5 and x = -1
l 6 l = x
-6, 6
l 3y l = 15
-5, 5
l 7 l = e
7, -7
l 2p l = 10
5, -5
l h - 10 l = 12
-2, 22
l 4 l = n
4, -4
l 12 + m l = 9
-21, -3
l b l = -12
no solution
l F - 4 l = 20
-16, -20
l 100 l = h
-100, 100
l h - 7 l = 12
19, -5
l 8 l = b
8, -8
l - 121 l = y
121
l x/3 l = 2
6, -6
