AEPA Math Test Preparation - MathHelp.com - By MathHelp.com
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| 00:0-1 | The following is a selected video from your teacher.com where | |
| 00:03 | you can browse over 450 complete math lessons with example | |
| 00:07 | videos , interactive practice problems , self tests and more | |
| 00:11 | . Try a complete lesson today at your teacher dot | |
| 00:14 | com to solve for X . And the equation you | |
| 00:19 | see here . Our goal is the same as it | |
| 00:22 | was for the problems in the previous section to get | |
| 00:25 | X by itself . The only difference is that there's | |
| 00:29 | more stuff happening to the X here , so it's | |
| 00:32 | going to take more work to get X by itself | |
| 00:36 | . Our first step will be to isolate the term | |
| 00:40 | containing X , which in this case is two X | |
| 00:45 | . To isolate two X . We have to get | |
| 00:48 | rid of this plus three by subtracting three from both | |
| 00:53 | sides of the equation On the left , plus 3 | |
| 01:00 | -3 cancels . And we're left with two x On | |
| 01:07 | the right , 5 -3 simplifies to two . And | |
| 01:12 | we're left with a situation that it's just like the | |
| 01:15 | problems in the previous section to get X by itself | |
| 01:20 | . Since it's being multiplied by two , we just | |
| 01:23 | divide both sides of the equation by two on the | |
| 01:28 | left , the two's cancel , and we're left with | |
| 01:31 | X on the right To over two simplifies to one | |
| 01:39 | . So our answer is X equals one , and | |
| 01:43 | feel free to check your answer by plugging a one | |
| 01:46 | back in for X . In the original equation , | |
| 01:50 | we get two times one , which is two plus | |
| 01:54 | three equals five . So it works and we know | |
| 01:59 | our answer is right . |
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