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Solve for the unknown, and then check your solution.$$x-7=9$$

$$16$$

Algebra

Chapter 0

Reviewing the Basics

Section 1

Solving Linear Equations

Equations and Inequalities

Campbell University

University of Michigan - Ann Arbor

Lectures

00:47

Solve equation, and check …

00:44

Solve and check.$$9 x+…

00:35

00:49

Solve the equation and che…

00:28

Solve and check.$$7 x-…

01:22

Solve the equation.$$|…

01:38

Solve each equation, and c…

01:16

Solve equation. Check your…

00:38

Solve each equation. Check…

00:31

Solve the equation.$$-…

01:21

Hello. For this question, we have to solve the following the linear question. X minus seven equals nine. And I remember that all in your questions are simply just two expressions that equal each other and they're only empowers of one. So we're not going to see any quadratic so or any other higher power any higher powers here. First thing we have to mention is that addition and subtraction under each other and multiplication and division under each other. We're gonna use the's in order to rearrange the equation around and toe isolate X. So first thing we're gonna do, we're gonna follow this rule these rules right here for a simplify, if possible, and then rearranged to get X by itself and then completely isolate X in order to find whatever excess. So we have X minus seven equals nine. First thing that we're gonna do is try to get X by itself. In order to do that, we have to get rid of this minus seven. So in order to undo this, we're going to add seven. So we're going to have X minus seven plus seven is going to equal nine a seven. So whatever we did to one side of the equation we have to do to the other side. So X minus seven for seven equals 9 to 7. So the seventh here going to cancel out we're going to be left with X equals nine plus seven. It's simply X equals 16. So our X value here is equal to 16. And in order to double check if this is correct or not, which is going to plug in 16. And to the original question, which was, Um, X 27 equals nine. We have X minus 17. Coastline were simply replaced X with 16, and we can see that 16 minus seven indeed does equal nine. So this question is already solved. X equals 16. This is our final value.

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