One-Step Addition Equations | MathHelp.com - By MathHelp.com
| 00:0-1 | if we're asked to solve for X in the equation | |
| 00:02 | X plus two equals six , what we're really being | |
| 00:06 | asked to do is get X by itself on one | |
| 00:09 | side of the equation . So if we take a | |
| 00:12 | look at the left side of our equation , a | |
| 00:14 | two is being added to X . So in order | |
| 00:18 | to get X by itself we must subtract two from | |
| 00:23 | the left side of the equation and remember from your | |
| 00:26 | first rule of solving equations that if we subtract two | |
| 00:30 | from the left side of the equation , we must | |
| 00:32 | also subtract two from the right side of the equation | |
| 00:37 | . So on the left side are plus two and | |
| 00:40 | minus to cancel out and we're left with X On | |
| 00:46 | the right side of the equation , 6 -2 simplifies | |
| 00:51 | to four . So our answer is x equals four | |
| 00:56 | . The nice thing about solving equations is that you | |
| 00:59 | can always check your answer by plugging it back in | |
| 01:03 | to the original equation . So here we're going to | |
| 01:07 | plug a four back in for X . And the | |
| 01:10 | original equation , And we get parentheses four plus two | |
| 01:18 | equal six , Since 4-plus 2 equals six is a | |
| 01:25 | true statement . Our answer checks and we know that | |
| 01:30 | it's right . |
DESCRIPTION:
This lesson covers number patterns. Students learn to find the next 3 terms in advanced patterns that involve figures, letters, or numbers. For example, to find the next three terms in the pattern A, Z, B, Y, __, __, __, notice that the first and third terms in the pattern, A and B, are the first two letters in the alphabet, so the fifth and seventh terms in the pattern will be the next two letters in the alphabet, C and D. And the second and fourth terms in the pattern, Z and Y, are the last letter and the second-to-last letter in the alphabet, so the sixth term in the pattern will be the third-to-last letter in the alphabet, X. So the next three terms in the pattern A, Z, B, Y, __, __, __ are C, X, and D.
OVERVIEW:
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