Question

1. Simplifique as expressões algébricas (6 Ano)

Answer 1

a) 5 . ( x - 1 ) + 4 . ( x + 1 ) =
   5x - 5 + 4x  + 4 =


b) - 3 . ( 2x - 5 ) + 6 . ( - 2x - 10 ) =
    - 6x - 15 - 12x  - 60 =


c) 2/5 . ( 15 - 10 )  - 1/2 . ( 6x - 8 ) =
   6 - 4 - 3x - 4 =