One-step and two-step equations & inequalities
10 videos
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7
Pre-algebra - Equations & Inequalities: What They Are and Why You Need Them
Learn the difference between equations and inequalities. Equations find exact values, while inequalities find ranges of possible solutions.
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4
Pre-algebra - Combining Like Terms: The Key to Simplifying Expressions
Learn how to combine like terms in algebra by identifying terms with the same variable and adding their coefficients, including examples with positive and negative numbers.
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Pre-algebra - Distributive Property & Simplifying Expressions
Learn the distributive property with real examples. Multiply outside numbers by terms inside parentheses, then combine like terms to simplify expressions.
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Pre-algebra - Writing Expressions from Word Problems
Learn how to write algebraic expressions using variables, coefficients, and constants through a real-world pizza shop job example with hourly pay and uniform costs.
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Pre-algebra - Solving Equations: The Balance Principle
Learn how equations work like balanced scales and why you must perform the same operation on both sides to solve for x. Includes a simple example solving x + 3 = 11.
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1
Pre-algebra - Solving Two-Step Equations Step by Step
Learn how to solve two-step equations by undoing operations in reverse order: first subtraction/addition, then division/multiplication, with a clear example.
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Pre-algebra - Spot the Mistake: Two-Step Equations
Learn to avoid the two most common algebra mistakes: incomplete distribution and unbalanced operations when solving equations.
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Pre-algebra - Two-Step Equation Word Problems
Learn to solve two-step equations with a real-world example: calculating how many weeks of work needed to save up for sneakers using algebra.
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Pre-algebra - Inequalities: Solving and the Sign-Flip Rule
Learn how to solve inequalities, including the crucial rule: flip the inequality sign when multiplying or dividing by a negative number.
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Pre-algebra - Inequality Word Problems: Setting Up and Solving
Learn to solve inequality word problems by translating real-world scenarios into math. Example shows how to calculate lawns needed to afford a gaming headset.