ademers92304 ademers92304
  • 21-01-2021
  • Mathematics
contestada

x + y = 21
3x – 2y = -12

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mya2441
mya2441 mya2441
  • 21-01-2021
This is the answer !!!!!!!!!!!
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Answer Link
aalceres06
aalceres06 aalceres06
  • 21-01-2021

Answer:

x = 6 y = 15

Step-by-step explanation:

If this is simultaneous equations

x+y=21

3x-2y= -12

-3(x+y=21)

1(3x-2y= -12)

-3x -3y= -63

3x-2y= -12

-5y= -75

y= -75/-5

y= 15

x+y=21

x+15=21

x=21-15

x=6

Answer Link

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