- #1
2 - 6 = x
x = 4
2+9=x
x = 11
3-14=x
x = 11
12+ 19=x
x = 31
12- 22=x
x = 10
19 - x = 10
x = 29
9 + x = 14
x = 5
27 - x = 16
x = 43
x + 98 =129
x = 31
51- x = 32
x = 83
32 - x = 41
x = 73
19 + x = 27
x = 8
24 - x = 24
x = 48
77 + x = 90
x = 13
30 - x = 20
x = 50
15 - x = 23
x = 38
14 + x = 32
x= 18
90 - x = 27
x = 117
54 + x = 76
x = 22
92 - x = 27
x = 119
50 - x = 236
x = 286
x + 46 = 89
x = 43
87 - x = 64
x = 151
11 + x = 182
x = 171
400 - x = 258
x = 658