Multi Step Equations | MathHelp.com - By MathHelp.com
00:00 | To solve for X in this equation , our first | |
00:03 | step is to simplify the left side By distributing this | |
00:07 | three through both terms inside the parentheses . When we | |
00:14 | do that , we get three times one which is | |
00:18 | three and three times negative two X . Which is | |
00:23 | negative six X . So we have 3 -6 x | |
00:29 | equals -9 . And now we have a setup that | |
00:33 | you should be very familiar with . Our next step | |
00:36 | is to isolate the X term by subtracting three from | |
00:41 | both sides of the equation On the left , 3 | |
00:48 | -3 cancels , and we're left with negative six X | |
00:54 | On the right , -9 -3 , simplifies to negative | |
01:00 | 12 . To get X by itself , we divide | |
01:04 | both sides by negative six and X equals positive too | |
00:0-1 | . |
DESCRIPTION:
This lesson covers complementary angles. Students learn the definition of complementary and supplementary angles, as well as how to find the measures of the complement and supplement of a given angle. Students are also asked to solve word problems in the following form: "If the ratio of an angle to its complement is 2:3, find the measure of each angle."
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