bidi3 bidi3
  • 23-08-2017
  • Mathematics
contestada

Please help solve -2|5y-1|=-10

Respuesta :

coolstick
coolstick coolstick
  • 23-08-2017
Alright, so we can start by dividing -2 from both sides, getting |5y-1|=20. Then, since 5y-1 is in an absolute value, 5y-1 is either 20 or -20.
In 5y-1=20, we can add one to both sides, getting 5y=21 and y=21/5. In
5y-1=-20, we can add one again, getting 5y=-19 and y=-19/5.

If you have any more equations, make sure to plug both numbers in to check, but otherwise y has two answers , which are -19/5 and 21/5.
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