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Lemur [1.5K]
3 years ago
15

Mike thought of a number. He added to it two other numbers. One of these numbers was 12 less than his number, the other was 12 m

ore than his number. The result of addition was 15. What was Mike’s original number?
Mathematics
2 answers:
wariber [46]3 years ago
6 0

Let us say the number was x.

Mike added to it two other numbers.

First number added is 12 less than the original number.

So first number is x-12.

Second number added is 12 more than the original number.

So second number is x+12.

Now we are given that the result of adding all three numbers is 15.

Converting the information given into equation, we have:

original number + first number + second number =15

x+(x-12)+(x+12)=15

Adding like terms,

3x=15

dividing both sides by 3,

x=5

Answer: So the original number that Mike thought was 5.

NikAS [45]3 years ago
3 0
The answer is 5 because 5 plus 17 is 22 minus 7 is 15 meaning that the answer is 5
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