Friday
July 25, 2014

Homework Help: algebra I

Posted by Brittani on Thursday, January 15, 2009 at 11:57pm.

System of Equations

I need help with the following problem:

A youth group with 26 members is going skiing. Each of the five chaperones will drive a van or a sedan. The vans can seat 7 people and the sedans can seat five people. How many of each type of vehicle could transport all 31 people to the ski area in one trip?

I used the following equation:

7x + 5y = 31. (x= van, y=sedan)
7x=31-5y.
I divdied by 7 on both sides.
x=31-5y/7.

This is where I got stuck. What am I doing wrong?

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