Dell381 Dell381
  • 16-03-2015
  • Mathematics
Answered

what is the solution set for 8x-9=11x+12

Answer :

baonguyenq1999
baonguyenq1999 baonguyenq1999
  • 16-03-2015
8x-9=11x+12
8x-11x-9=12
-3x-9=12
-3x=12+9
-3x=21
x=21/-3
x=-7
Answer Link
Panoyin
Panoyin Panoyin
  • 17-03-2015
8x - 9 = 11x + 12
-8x        -8x         
     -9 = 3x + 12
   -12           -12
   -21 = 3x
     3      3
     -7 = x
Answer Link

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