Algebra is a branch of mathematics in which letters and symbols are used to represent numbers and quantities in formulae and equations. In simple algebra, we work with basic operations such as addition, subtraction, multiplication, and division using variables and constants.

**Variables:**In algebra, letters such as x, y, and z are used to represent unknown quantities or values.**Constants:**These are fixed values that do not change, such as numbers like 2, 3, or -5.**Expressions:**Algebraic expressions are combinations of variables, constants, and operations (like addition, subtraction, multiplication, and division).**Equations:**An equation is a mathematical statement that shows that two expressions are equal. It contains an equal sign (=).**Solving Equations:**In algebra, we often solve equations to find the value of the variable that makes the equation true.

Here are the basic algebraic operations and their symbols:

- Addition:
**+** - Subtraction:
**-** - Multiplication:
*****or**×** - Division:
**/**or**÷**

Here are some examples of simple algebraic expressions:

- 3x + 5
- 2y - 7
- 4z + 2z
- 5a - 2b

Now, let's solve some practice problems to reinforce the concepts:

- Simplify the expression: 2x + 3y - 4x + 5y
- Solve the equation: 3a - 7 = 10
- Find the value of x in the equation: 2x = 14

Remember, practice is key to mastering algebra. Keep working on problems and seeking help when needed.

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Study GuideSimple Algebra Worksheet/Answer key

Simple Algebra Worksheet/Answer key

Simple Algebra Worksheet/Answer key

Simple Algebra

Algebra (NCTM)

Represent and analyze mathematical situations and structures using algebraic symbols.

Use symbolic algebra to represent situations and to solve problems, especially those that involve linear relationships.

Grade 6 Curriculum Focal Points (NCTM)

Algebra: Writing, interpreting, and using mathematical expressions and equations

Students write mathematical expressions and equations that correspond to given situations, they evaluate expressions, and they use expressions and formulas to solve problems. They understand that variables represent numbers whose exact values are not yet specified, and they use variables appropriately. Students understand that expressions in different forms can be equivalent, and they can rewrite an expression to represent a quantity in a different way (e.g., to make it more compact or to feature different information). Students know that the solutions of an equation are the values of the variables that make the equation true. They solve simple one-step equations by using number sense, properties of operations, and the idea of maintaining equality on both sides of an equation. They construct and analyze tables (e.g., to show quantities that are in equivalent ratios), and they use equations to describe simple relationships (such as 3x = y) shown in a table.