Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Entry Level Assessment - Multiple Choice - Page XXXIV: 5

Answer

$D)$ $6+2x=72$

Work Step by Step

Let's translate English terms into mathematics terms. "Is" in English means "equal" in math, which results in $=72$ on one side of the equation. "Twice the number" - lets say the number we are talking about is $x$ - means it is $2$ times the number $x$; resulting in $2x$. "Six more" means that we would add six in the equation on the side of the term $2x$. We get the equation $72 = 2x +6$. We can also rearrange the equation in way that results in $6 + 2x = 72$. In order to solve the equation, we move the like terms on one side and the unlike terms on the other. In this question, we move $6$ to the other hand which makes it $72-6$ which is $66$ and on the left hand we have $2x$. We then take the two which is multiplied by $x$ since it is a like term and move it to the right-hand side to get $66/2$ which is $33$. Note: When we move terms to the other side, they change symbols a (-) sign turns into a (+) sign and a ($\times$) sign changes to a ($\div$) and vice versa.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.