3 years ago

When 2 times a number is subtracted from 7 times the number, the result is 55. what is the number?

1 answer:

8 0

Let n represent the number. You require
7n - 2n = 55
5n = 55 . . . . . . collect terms
n = 11 . . . . . . . divide by 5

The number is 11.

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