Question

9x + 1 = 10 x - 2 porfavor

Answer 1

9x-10x=-2-1
-x=-3
x=3
se cambia de signo

Answer 2

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si es  9X + 1 = 10X - 2


9X + 1 = 10X - 2
9X-10X=-2-1
         -X=-3
          X=3


si es 9X + 1 = 10 (X - 2)

9X + 1 = 10 (X - 2)
9X + 1 = 10X-20
9X-10X=-20-1
    -X=-21
      X=21