Find the missing numbers.
37
25
55
77
48
+
+
+
+
+
x
x
x
x
x
=
=
=
=
=
67
33
84
91
96
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....
57
36
48
28
39
+
+
+
+
+
x
x
x
x
x
=
=
=
=
=
82
75
96
56
68
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....
x
x
x
x
x
+
+
+
+
+
15
37
39
65
27
=
=
=
=
=
63
63
78
81
55
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....
55
x
x
28
x
+
+
+
+
+
x
34
19
x
37
=
=
=
=
=
82
51
91
82
73
x
x
x
x
x
=
=
=
=
=
.....
.....
.....
.....
.....