mariah240mtzov0hr5
mariah240mtzov0hr5 mariah240mtzov0hr5
  • 13-02-2019
  • Mathematics
contestada

so i need H E L P...
PLS help me

so i need H E L P PLS help me class=

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 13-02-2019

Answer:

A 3

Step-by-step explanation:

Let n = the number

a number decreased by 12

n-12

This is equal to 3 times the opposite =

3 times the opposite

3*(-n)

-3n

Setting the two parts equal

n-12 = -3n

Subtract n from each side

n-n-12 = -3n-n

-12 = -4n

Divide by -4

-12/-4 = -4n/-4

3 =n

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