yesirr56
yesirr56 yesirr56
  • 07-07-2021
  • Mathematics
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Helppp and explain thankyouuu

Helppp and explain thankyouuu class=

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WafflesPancake WafflesPancake
  • 07-07-2021

We have that

x - 3y = 12 and -x + y = 4

We add the 2 equations together

x - 3y + (-x + y) = 16

-> -2y = 16

-> y = -8 (1)

We plug y = -8 into -x + y =4

-> -x - 8 = 4

-> -x = 12

-> x = - 12 (2)

From (1) and (2) we could conclude that the answer is B

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