Answer:
119 hotdogs
Step-by-step explanation:
Let 7x = no. of hotdogs
then 3x = no. of hamburgers
3x = 51
x = 17
7(17) = 119 hotdogs
3a
0
-18a
2a
5a
-2b+c-12
Answer: 61, 62, 63
61 + 62 + 63 = 186