elijahjruiz05 elijahjruiz05
  • 02-02-2021
  • Mathematics
contestada

7x + 2y = 12

-3x -2y = 4

Respuesta :

nbiz1924
nbiz1924 nbiz1924
  • 02-02-2021

Answer:

(4, -8) or x=4 y=-8

Step-by-step explanation:

Answer Link
Elizabethtienna
Elizabethtienna Elizabethtienna
  • 02-02-2021

Answer: x=4 and y=−8

Step-by-step explanation: 7x+2y=12, −3x−2y=4

7x+2y+−2y=12+−2y

7x /7 = −2y+12 /7

x= −2 /7 y+ 12 /7

−3( −2 /7 y+ 12 /7 )−2y=4

−8 /7 y+ −36 /7 + 36 /7 =4+ 36 /7

−8 /7 y / /−8/7 = 64 /7 /−8 /7

y=−8

x= −2 /7 y+ 12 /7

x= −2 /7 (−8)+ 12 /7

x=4

x=4 and y=−8

Answer Link

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