SOLUTION: If a number is increased by 7 and that result is divided by 2, the number 5 is obtained. Find the original number.

Algebra ->  Problems-with-consecutive-odd-even-integers -> SOLUTION: If a number is increased by 7 and that result is divided by 2, the number 5 is obtained. Find the original number.       Log On


   

Question 977366: If a number is increased by 7 and that result is divided by 2, the number 5 is obtained. Find the original number.
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
Make the number 'x'
Number is increased by 7
=> x + 7
That result is divided by 2
=> (x + 7)/2
The number 5 is obtained.
=> (x + 7)/2 = 5
Cross multiply
=> x + 7 = 10
Take 7 off each side of the equation
=> x + 7 - 7 = 10 - 7
=> x = 3
This is the original number.
Hope this helps:-)