522,796 views
44 votes
44 votes
One number is five less than a second number. Five times the first is 2 more than 2 times the second. Find the numbers.

User Gourango Sutradhar
by
2.6k points

1 Answer

11 votes
11 votes
Your numbers are 4 and 9

We’ll call the first number a, the second b.
a = b - 5
5a = 2b + 2
(if you’re not sure where I got those equations, just let me know in the comments.)

Then we’ll substitute the first value into the second equation:

5(b - 5) = 2b + 2
5b - 25 = 2b + 2
3b = 27
b = 9

a = b - 5
a = 9 - 5 = 4
User Wesley Smits
by
3.2k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.