Algebra I – Solving Equations

In this article we will learn how to solving equations for unknown values using the number line, algebraic expressions, solving by adding, solving by multiplying, cross multiplication, coefficients, combining like terms, multi-step equations, multivariable equations, and unsolvable equations.

Adding a negative is the same as subtracting a positive and subtracting a negative is the same as adding a positive.

Coefficients are numbers that appear in front of variables or multiplicative factors in front of variables, which means they are numbers that you multiply variables by in expressions.

When adding/subtracting terms with matching variables, you can combine them by adding/subtracting their coefficients.

In videos section we will learn:

Part 1: Algebra I – Solving Equations - Solving for unknowns | Algebraic expressions | Solving by adding

- Solving for unknowns, solve for unknown values using the number line.

- Algebraic expressions, learn how to evaluate expressions with variables. 

- Solving by adding, adding or subtracting on both sides of equations.

Part 2: Algebra I – Solving Equations - Solving by multiplying | Cross multiplication

- Solving by multiplying or dividing on both sides of equations.

- Cross multiplication, a quick way to solve equations with fractions

Part 3: Algebra I – Solving Equations - Coefficients | Combining like terms | Multi-step equations

- Coefficients, numbers in front of variables.

- Combining like terms, adding/subtracting terms with matching variables

- Multi-step equations, sometimes it takes more than one step to solve.

Part 4: Algebra I – Solving Equations - Multivariable equations| Unsolvable equations

- Multivariable equations, solving equations when they have more than one variable.

- Unsolvable equations, some equations have no solutions, others have plenty!