x = 2
x + 4 =
6
11 + a =
14
82 + b =
92
12 + c =
17
8 + y =
16
x + 23 =
25
65 + a =
68
74 - b =
64
129 + c =
134
327 + y =
335
48 - x =
46
52 - a =
49
137 - b =
127
52 - c =
47
563 - y =
555
72(x)=
144
28(a)
84
40(b)
400
74(c) =
370
42(y) =
336
120/x
60
999/a
333
1,100/b
110
255/c
51
216/y
27