x / 3 - 1 = 2
x = 9
x = ( 16 - 1 ) / 3
(1 + x) / 3 = 3
x + 5 = 7
x = ( 5 - 3 ) / 2
2x - 3 = 5
x = ( 2 + 1 ) · 3
3x = x + 6
x = 2
x = 3 · 3 - 1
x = 1
x = ( 5 + 3 ) / 2
x = 5
7 - x = 1
x = 4
1 + 3x = 16
x = 7 - 1
5 - 2x = 3
x = 7 - 5
x = 6
x = 3
x = 8
x = 6 / 2
