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The sum of a number,n,and 8 is multiplied by -4 ,and the result is -12 .what is the number?
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Sep 20, 2017
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The sum of a number,n,and 8 is multiplied by -4 ,and the result is -12 .what is the number?
Mathematics
middle-school
Htanata
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(8+n)*-4=-12
-32-4n=-12
-4n=20
n=-5
Sergio Acosta
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Sep 22, 2017
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Sergio Acosta
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Sum of n and 8 = (n + 8)
Multiplied by -4 = -4*(n + 8)
Result = -12
-4*(n + 8) = -12 Divide both sides by -4
(n + 8) = -12/-4
n + 8 = 3
n = 3 - 8
n = -5.
The number is -5.
Adam Goss
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Sep 24, 2017
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Adam Goss
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