safiabaghzali safiabaghzali
  • 05-09-2017
  • Mathematics
contestada

Seven minus 2 times a number is the same as the number minus 2

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Louli
Louli Louli
  • 05-09-2017
assume the number is x
now, we will translate the written english into equation:
seven minus 2 times the number is 7-2x
the number minus 2 is x-2
we will equate these two equations (the question says that they are equal) ans solve for x as follows:
7-2x=x-2
7+2=x+2x
9=3x
x=3
the required number is 3
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andresantonior
andresantonior andresantonior
  • 05-09-2017
So this is what the question is saying 
7-2n  is equal to n-2


Answer Link

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