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−2∣5w−7∣+9=−7

 Jan 23, 2019
 #1
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+1

−2∣5w−7∣  + 9  = −7        subtract 9 from both sides

 

-2  l 5w - 7 l  = - 16           divide both sides by -2

 

l 5w - 7 l   =  8         we have two equations

 

5w - 7   =  8                          5w - 7  = - 8              

 

                          add 7 to both sides

 

5x = 15                                  5x =  - 1        

 

                         divide both sides by 5

 

x =   3                            or                 x = - 1 / 5

 

 

 

cool cool cool

 Jan 23, 2019

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