Solving One-Step Equations: A Step-By-Step Guide | Algebraic Equations | Math with Mr. J
From Math with Mr. J
17 min6thMath
Summary
How to write and evaluate expressions and solve one-step equations -- using a variable to stand for an unknown and keeping both sides balanced. Mr. J introduces the idea gently.
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Teaching resources
Discussion questions
A variable is a letter that stands for a number; solving an equation finds the value that makes it true.
- What does a variable stand for?
- How do you check if a number is the solution to an equation?
- How do inverse operations help you solve x + 5 = 12?
Quick work-a-long
Words to know: variable, expression, equation, solution
- Evaluate 2n + 3 when n = 4.
- Solve x + 7 = 15.