kalyssakirby
kalyssakirby kalyssakirby
  • 15-12-2020
  • Mathematics
contestada

Solve the equation -2(y - 1) = 9.
-11/2
7/2
11/2
-7/2

Respuesta :

ayato77
ayato77 ayato77
  • 15-12-2020
Hope this helps !! Did it step by step
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devishri1977
devishri1977 devishri1977
  • 15-12-2020

Answer:

-7/2

Step-by-step explanation:

Use distributive property: a(b +c) = a*b +a*c

-2(y-1) = 9

y*(-2) - 1*(-2) = 9

-2y + 2  = 9  {Subtract 2 from each side}

-2y       = 9 - 2

      -2y = 7       {Divide each side by -2}  

         y = 7/-2

y = -7/2

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