Question

Solve and check. $$10 y-3 y=21$$

Name: Problem 93, Chapter 5: Prealgebra and Introductory Algebra
Uploaded: 2020-06-21T23:41:01-08:00
Duration: 1 min 7 s
Channel: Ethan Somes
Description: Solve and check. 10 y-3 y=21

   Solve and check.
$$10 y-3 y=21$$

Prealgebra and Introductory Algebra

Richard N. Aufmann,… 3rd Edition

Chapter 5, Problem 93

Instant Answer

Solved by Expert Ethan Somes

06/21/2020

Step 1

This gives us: $$10y - 3y = 21$$ which simplifies to: $$7y = 21$$ Show more…

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Solve and check. $$10 y-3 y=21$$

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Key Concepts

Combining Like Terms

This concept involves simplifying algebraic expressions by adding or subtracting coefficients of the same variable. It is a foundational skill that helps in reducing expressions to simpler forms, making it easier to solve equations.

Isolating the Variable

The process of isolating the variable involves performing algebraic operations to obtain the variable on one side of the equation by itself. This is a crucial step in solving linear equations, allowing you to determine the value of the unknown.

Verification of Solutions

After determining a solution to an equation, it's important to verify that the found value satisfies the original equation. This involves substituting the solution back into the equation to check if the equality holds, ensuring correctness of the solution.

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