### Theory

 1 Introduction 2 Simultaneous linear equation in two variables 3 Simultaneous linear equation in three variables 4 System of linear equation in three variables 5 Examples

### Textbook Questions

 1 Multiple choice questions I Difficulty: easy 2 2 Multiple choice questions II Difficulty: easy 2 3 Find the age of Vani, her father and her grandfather Difficulty: medium 2 4 Find the ages Difficulty: medium 2 5 Solve the equations Difficulty: medium 2 6 Find the number of currencies: I Difficulty: medium 2 7 Find the number of currencies: II Difficulty: medium 2 8 Find the number of students in three sections Difficulty: hard 5 9 Find the number of students in three sections: II Difficulty: hard 5 10 Find the original three digit number: I Difficulty: hard 5 11 Find the original three digit number: II Difficulty: hard 5 12 Determine the time it takes for each people working alone Difficulty: hard 5

### Practice Questions

 1 Choose the correct answer for linear equations in three variables Difficulty: easy 1 2 Identify the consistency and inconsistency of linear equation in three variables Difficulty: easy 1 3 Solve the equation for three variables Difficulty: medium 2 4 Determine the number of clothes Difficulty: medium 2 5 Calculate the cost of a notepad, a book and a pen Difficulty: medium 2 6 Find the numbers Difficulty: medium 2 7 Calculate the food eaten by a hen, a cow and a goat Difficulty: hard 5 8 Find the length, breadth and height Difficulty: hard 5

### Entrance Exam Questions

 1 Determine the total cost of an eraser, pencil and a sharpener(NTSE) Difficulty: easy 5 2 Find the cost of bananas, apples and coconuts(NTSE) Difficulty: medium 5 3 Calculate the age(NTSE) Difficulty: hard 1.5

### Key Questions for School Exam Preparation

 1 Solve using elimination method Difficulty: medium 2 2 Calculate the numbers Difficulty: medium 2

### Worksheets

 1 Worksheet 1: "Simultaneous linear equation in three variables" Difficulty: easy 9 2 Worksheet 2: "Simultaneous linear equation in three variables" Difficulty: medium 9

### Teacher manual

 1 Methodical recommendation