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Colt1911 [192]
4 years ago
9

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

Mathematics
1 answer:
tensa zangetsu [6.8K]4 years ago
4 0

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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