Respuesta :
62 people were on the train to begin with.
What are Arithmetic operations?
Arithmetic operations can also be specified by the subtract, divide, and multiply built-in functions.
Let x no. of people were on the train to begin with
No. people get off = 18
No. people get on = 21
There are now 65 people on the train
No. of people were on the train to begin with = 65+18-21 = 62.
Hence, 62 people were on the train to begin with.
Learn more about Arithmetic operations
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