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matt-d

matt-d

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matt-d
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  • x-y=4 x+y=12 Two ways to do this problem: 1. add the 2 equations get 2x = 16 x = 8 then y = 4 or substitue the value of x in terms of y from eqn (1) into equation (2) x = y + 4 fm (1) then sub in (2) Y…
    in math problem? Comment by matt-d May 2021
  • x-y=4 x+y=12 Two ways to do this problem: 1. add the 2 equations get 2x = 16 x = 8 then y = 4 or substitue the value of x in terms of y from eqn (1) into equation (2) x = y + 4 fm (1) then sub in (2) Y…
    in math problem? Comment by matt-d May 2021