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Assume the problem is:
;
Five times a sum of a number and three is seven less than six times the number.
Find the number
:
5(n+3) = 6n - 7
5n + 15 = 6n - 7
15 + 7 = 6n - 5n
n = 22
:
:
You can check this in the given statement replacing "number" with 22