bryan2258 bryan2258
  • 06-02-2019
  • Mathematics
contestada

3x-4y=-24 and x+y=-1

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Аноним Аноним
  • 06-02-2019

Answer:

x = -4, y = 3.

Step-by-step explanation:

3x - 4y = -24................(1).

x + y = -1       Multiply this equation by -3:-

-3x - 3y = 3...................(2)

Adding (1) and (2):

-7y =  -21

y = 3.

Substitute y = 3 in equation (1):

3x - 4(3) = -24

3x = -24 + 12

3x = -12

x = -4.

3x - 28 = -24

3x = 4


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