147k views
2 votes
I thought of a number, added 4 5/7 to it, and got the number 12 times as big as my original what was my number

2 Answers

4 votes

Answer:

3/7

Explanation:

User Besthost
by
6.7k points
3 votes
Let's call the number you thought of n. Then what the two steps you took can be written as an equation:

n+4(5)/(7)=12n

Subtract n to get all of your variables to one side:

4(5)/(7)=11n

At this point, I recommend turning your mixed number into an improper fraction. It will make things easier later on:

(33)/(7)=11n

Now divide both sides by 11 to get the value of n:

(3)/(7)=n
User Maarten Veerman
by
6.5k points
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