A Mini Lesson on Basic Algebra

What is algebra?

What is algebra? Algebra is a kind of mathematics in which letters are used along with numbers. The letters are called variables.

What is a variable?

What is a variable? A variable is a letter that takes the place of a number that is unknown.

Solving an Addition Problem with a Variable x+11=58 x=47

Solving a Subtraction Problem with a Variable x-12=28 x=40

Solving a Multiplication Problem with a Variable 3x=30 x=10

Solving a Division Problem with a Variable x/2=6 x=12

Solving a Multi-step Problem 3x-6=30 x=12

Remember!!!! Get the variable by itself. Whatever you do to the left side of the equation, you have to do to the right side.