radomes.openskiesproject.org
elenismartinez elenismartinez
  • 20-08-2015
  • Mathematics
Answered

when i double me number and add ten.i get my number plus nine

Verified Answer :

eu99li
eu99li eu99li
  • 20-08-2015

x is your number......

2x+10=x+9 . . . . /-x. .........
x+10=9 . . . . . /-10.........
x=-1

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