What is algebra?
Algebra is a part of mathematics, and uses letters and symbols to display numbers. Instead of using only numbers such as 2, 4, or 9, we also use characters such as x, y, z.
These letters indicate unknown numbers that we don’t know yet! algebra?
Algebra can help you solve the problem more easily, especially if you don’t know all the numbers.
The term Albraic
Learn some important words in algebra.
It may change or change.
Example: x + 3 = 7, x is a variable.
It won’t change.
Example: x + 3 = 7, the numbers are 3 and 7 constants.
Expression. 3x, number 3 is the coefficient of x.
You try to find the number behind X.
Example: If x + 4 = 9,
what is x?
Rules we already know!
Easy rule 1: What are you doing on the other hand?
Algebraic equations
Learn how to find the values of variables in equations.
x = 10・2
x = 5
Example 3:
4= 9
Added 4 on both sides:
x = 9 + 4
x = 13
Writing Algebraic Formulas
You can write actual problems as algebraic formulas.
Example 1:
Rabbi has x chocolate
He gets another five. All the ball cost – ¹3. She ate two.
expression: x2
Algebra Word Problems
Attempt to solve word problems using algebra.
This book is lyst.
How much does a pencil cost?
is the price of pencil x.
The bus runs in an hour x kilometres. It travels 200km in 5 hours.
What is x?
boxes or shapes instead of letters
Shapes may be used instead of initial algebraic characters.
This will help young children get used to the ideas of strangers before using letters. = 8
Answer: x = 5
Check Now:
5 + 3 = 8 (right!)
Always check the final answer.
Try to solve them:
1. x + 6 = 13x =?
2. 3x =15x=?
3. x2 =9 4. If 5x=25, x?
What is 5?
How much does a pen cost? Area)
Sports (holding value or statistics)
Numbers x, y, z
Certain fixed numbers 2, 5, 100
The equation equals the mathematical sentence of the equation, 2x + 3
2x + 3 = 7
Coefficient 3
x = 7
2
x = 11
x= 5
x=teare15
