Multi Step Equations | MathHelp.com - Free Educational videos for Students in K-12 | Lumos Learning

Multi Step Equations | MathHelp.com - Free Educational videos for Students in k-12


Multi Step Equations | MathHelp.com - By MathHelp.com



Transcript
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 .
Summarizer

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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