**Update: This Lesson Is Part of Book 1 of Doodles Do Algebra: “Starting Out With Mental Algebra” available on Amazon.**

Teacher’s Notes:

*DoodleCat pretty well explains the problems for today so I think I just need to provide the answers. The problems are essentially like the ones in Lesson 8, but your child just gets more practice.*

Worksheet:

*Available in the book, “Starting Out With Mental Algebra, Book 1 of Doodles Do Algebra”*

Answers:

*first number = x, and***second number = 2x +**5, then**Sum = 35 = x + 2x + 5**. Now Solve for x: 35 = 3x + 5, then 35-5 = 3x, then 30 = 3x, then**x=10**. So,**first number = 10**and**second number = 25**.*smaller flock = x, and***larger flock = 5x + 5**, then**total = 83 = x + 5x + 5**. Now Solve for x: 83=6x + 5, then 83-5 = 6x, then 78 = 6x, then x=78/6, or**x=13**(it is very helpful here to know your 13 times ta**bles)**. So the**smaller flock has 13 sheep**, and the**larger flock has 70 sheep**.