There are a lot of choices for the two numbers; this is because no other condition has been placed on the numbers to pinpoint the exact numbers required.
x = 1st number
y = 2nd number
The equation would be:
4(x+y) = 172
4(x+y)/4 = 172/4
x + y = 43
If we get the value of x. then, x = 43 - y
Substitute x by its value
43 -y + y = 43
43 = 43
y = 0
If y = 0 then x = 43 to get the sum of 43
x y x + y 4x 4y 4x + 4y
43 0
43
172
-
172
42 1 43
168 4 172
41 2
43
164 8 172
40
3
43 160
12
172
39 4 43 156
16 172
38 5
43
152
20
172
37 6
43
148
24
172
36 7
43
144
28
172
35 8
43
140
32
172
34 9
43
136
36
172
33 10
43
132
40
172
32 11
43
128
44
172
31 12
43
124
48
172
30 13
43
120
52
172
29
14
43
116
56
172
28 15
43
112
60
172
27 16
43
108
64
172
26 17
43
104
68
172
25 18
43
100
72
172
24 19
43
96
76
172
23 20
43
92
80
172
22 21
43
88
84
172