Question

Solve equation, and check your solution. $4 x=-20$

   Solve equation, and check your solution.
$4 x=-20$

Beginning and Intermediate Algebra

Beginning and Intermediate Algebra

Margaret L. Lial ,… 5th Edition

Chapter 2, Problem 25

Instant Answer

Solved by Expert Amy Jiang

07/11/2020

Step 1

Step 1: We start with the given equation: \[4x = -20\] Show more…

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Solve equation, and check your solution. $4 x=-20$

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Key Concepts

Isolating the Variable

This involves performing inverse operations on both sides of an equation to get the variable by itself. For example, if a variable is multiplied by a number, both sides of the equation can be divided by that number to solve for the variable.

Linear Equation

A linear equation is an equation in which the highest power of the variable is one, and it can often be written in the standard form ax + b = 0. These equations represent straight lines when graphed and are solved by isolating the variable through basic algebraic operations.

Verification of a Solution

Once a solution for an equation is obtained, it is important to substitute it back into the original equation to ensure that it satisfies the equation. This process confirms the validity of the solution.

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