tìm x : (4x – 3) – ( x + 5) = 3(10 – x)

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1. `(4x -3) – (x+5) = 3(10-x)`

   `4x -3 -x -5 = 30 – 3x`

   `4x – x + 3x = 30 + 5 +3`

   `6x = 38`

   `x= 38:6`

   `x= 19/3`

   Vậy `x= 19/3`

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2. c1:(4x-3)-x-5=3(10-x)

   (4????−3−????−5=3(10−????)

   x=19/3

   c2:(4????−3)−(????+5)=3(10−????)

   4????−3)−(????+5)=3(10−????)

   x=19/3

   c3:4????−3−????−5=3(10−????)

   4????−8−????=3(10−????)

   x=19/3

   c4:4????−8−????=3(10−????)

   3????−8=3(10−????)

   x=19/3

   học tok

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