Explanation Given Information: The provided equation is 12 ( 2 D − 4 ) = 72 . Formula used: To solve the equation and prove the solution, follow the steps as mentioned below. Step 1 : Rearrange the unknown values to the left side and known values to the right side of the equation by using the following sequence of order to solve the equation. (a) Paranthesis, if any then clear it before performing the next operations by mutiplying the coefficient with each term inside the paranthesis. (b) In order to solve the equations with more than one operation, apply opposite operations from the provided operation in the equation, that is, addition if substraction is in the equation and multiplication if division is provided in the equation and vice versa. Step 2 : Prove the solution by substituting the value obtained from step 1 in the original equation then check the left and right of the equation if, they are equal then the answer is correct. Calculation: Consider the provided equation, 12 ( 2 D − 4 ) = 72 Clear the paranthesis by mutiplying the coefficient with each term inside the paranthesis, 12 ( 2 D ) − 12 ( 4 ) = 72 24 D − 48 = 72 To arrange the known values to the right side and unknown to the left side apply the opposite operation of subtraction, add 48 to both sides, 24 D − 48 =

Contemporary Mathematics For Business & Consumers, Loose-leaf Version

8th Edition

ISBN: 9781305867185

Author: Robert Brechner, Geroge Bergeman

Publisher: South-Western College Pub

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Chapter 5.I, Problem 15RE

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To calculate: The value of unknown from the equation 12(2D−4)=72 and prove the result.

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Chapter 5.I, Problem 14RE

Chapter 5.I, Problem 16RE

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Contemporary Mathematics For Business & Consumers, Loose-leaf Version

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The value of unknown from the equation 12 ( 2 D − 4 ) = 72 and prove the result.

Solution Summary: The author explains how to calculate the value of unknown from the equation 12(2D-4)=72 and prove the result.

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To calculate: The value of unknown from the equation 12(2D−4)=72 and prove the result.

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