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# Module 4; lesson 6

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## Naijja Chisolm

on 1 June 2010

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#### Transcript of Module 4; lesson 6

Module 4, le\$\$on 6 This slide will be about soliving multi-step equations . . . . Let's get started =D 1. -2x-3+8x = 6x-3 but howww =( ? Well first your going to combine the like terms which are -2x and 8x and add them which will give you 6. And of course you aways add the x, so that'll be 6x and add what's left which is -3. So the answer is 6x-3.

And do the same for the rest . . . . . :) 2.) -2x-3+8x = 27
6x-3 = 27
+3 +3
6x=30
6x/30 30/6

x=5 3. 2(d+4)-3 = -15
2d+8+-3 = -15
2d+5 = -15
2d+ 2d = -15 - (-20)
20=20
20/2 20/2

d = -10 let's try it together . . . . . 1. 3(x+2)-4 = 17
3x+6+-4 = 17
3x+2 = 17
3x = 15
3x/3 = 15/3
x=5 2. 9p+16.3-5p = 8.3
-8 = -8
4p/4 = -8/4
p = -2
not so bad right ? now let's review some skills we've learned ! -4q+3 = -9
-3 -3

-4q = -12 -3(a+5) = 6
-3a+(-15) = 6
+15 =15
-3a = -21 5(x+1) = 20
5x+5 = 20
-5 -5
5x = 15
__ __
5 5
x = 3
5(x+1) = 20
5x+5 = 20
-5 -5
x=3
NOW LETS GET SERIOUS !
AND TRY A WORD PROBLEM . . . . . The lenghth of a rectangle is 6 inches, the width is n-4 inches, and the area is 60 square inches. Solve the equation 6(n)-4 = 60 to find the value of n. What is the length of the rectangle? 6(n-4) = 60
6n-24 = 60
+24 +24
6n = 84
__ __
6 6
n = 14

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