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amm1812
3 years ago
12

One fifth of the sum of a number and -3 is twice the number

Mathematics
2 answers:
vladimir1956 [14]3 years ago
7 0

Answer:

1/5(x + -3) = 2x

Step-by-step explanation:

Tju [1.3M]3 years ago
7 0

Answer:

  the number is -1/3

Step-by-step explanation:

The given statement can be written in math terms as ...

  (1/5)(n -3) = 2n . . . the problem statement, using n to represent the number

  n -3 = 10n . . . . . . . . . multiply by 5

  -3 = 9n . . . . . . . . . . . subtract n

  -1/3 = n . . . . . . . . . . . divide by 9 and reduce the fraction

The number is -1/3.

_____

<em>Check</em>

  -1/3 -3 = -3 1/3 = -10/3

  1/5 of -10/3 = -2/3

  -2/3 is twice the number -1/3 . . . . . answer checks OK

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Hope it helped u,

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