cupcake56 cupcake56
  • 25-09-2017
  • Mathematics
contestada

Help!! what is -2r-1= -11

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AprilKitties
AprilKitties AprilKitties
  • 25-09-2017
-2r - 1 = -11

So here you want to group all like terms onto either side.

So you can first do this by getting rid of the -1 by adding 1 instead.

-2r -1 + 1 = -11 + 1

-2r = -10

And then now you can just divide both sides by -2.

-2r = -10

/-2    /-2

r = 5
Answer Link
krave1125
krave1125 krave1125
  • 25-09-2017
-2r-1= -11
+1       +1
-2r= -10
r=5
Answer Link

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