Solving Two Step Equations | MathHelp.com - By MathHelp.com
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| 00:0-1 | to solve for X . And the equation you see | |
| 00:02 | here , our goal is the same as it was | |
| 00:05 | for the problems in the previous section to get X | |
| 00:08 | by itself , the only difference is that there's more | |
| 00:12 | stuff happening to the X here , so it's going | |
| 00:15 | to take more work to get X by itself . | |
| 00:19 | Our first step will be to isolate the term containing | |
| 00:23 | X , which in this case is two X . | |
| 00:28 | To isolate two X . We have to get rid | |
| 00:31 | of this plus three by subtracting three from both sides | |
| 00:36 | of the equation On the left , plus 3 -3 | |
| 00:44 | cancels . And we're left with two x On the | |
| 00:49 | right , 5 -3 simplifies to two . And we're | |
| 00:55 | left with a situation that is just like the problems | |
| 00:58 | in the previous section to get X by itself , | |
| 01:02 | since it's being multiplied by two , we just divide | |
| 01:06 | both sides of the equation by two on the left | |
| 01:12 | , the two's cancel and we're left with X on | |
| 01:16 | the right To over two simplifies to one . so | |
| 01:22 | our answer is X equals one , and feel free | |
| 01:26 | to check your answer by plugging a one back in | |
| 01:30 | for X . In the original equation , we get | |
| 01:33 | two times one , which is two plus three equals | |
| 01:38 | five , so it works and we know our answer | |
| 01:42 | is right . |
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