pk77nwew2g pk77nwew2g
  • 09-12-2020
  • Mathematics
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7x+8y=19 , -6x -8y=18

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jaimitoM
jaimitoM jaimitoM
  • 09-12-2020

7x+8y=19

-6x -8y=18

---------------  Add both equations

x = 37

Using x = 37 in the first equation:

7(37)+8y=19

259+8y = 19

8y = 19 - 259

8y = -240

y = -240/8

y = -30

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