Dave B. answered • 07/28/19
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Three times the sum of the number and -7 is 12. Find the solution.
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Anonymous A. answered • 07/28/19
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Assume that the number is 'N'
Then the sum of the number and -7 = N + (-7)
3 times the sum of the number and -7 IS 12
3*(N-7) = 12
3N- 21 = 12
+21 =+21
--------------------------
3N =33
divide by 3 both sides
N = 11
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David W.
Note that this solves: "Three times (the number and -7) is 12. English is ambiguous, this could have been "(Three times the number) and -7 is 12."07/28/19