yellowsunnyydamaris yellowsunnyydamaris
  • 21-04-2021
  • Mathematics
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-2x - 8y = - 60 2x+y=-45 solve for y

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sqdancefan
sqdancefan sqdancefan
  • 21-04-2021

9514 1404 393

Answer:

  y = 15

Step-by-step explanation:

The coefficients of x are opposites in the two equations, so adding the equations will eliminate x.

  (-2x -8y) +(2x +y) = (-60) +(-45)

  -7y = -105 . . . . . simplify

  y = 15 . . . . . divide by -7

___

x = -30

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