Question

equação do 1 grau

a) 4 . ( 5-x) -3 ( x -3) = 5 ( x+ 1 )


b) 4 . ( 3x-1 ) + 4 - 9 ( x+ 1 ) = 5 ( x-4 )

Answer 1

a) 20-4x -3x-9=5x+5
     11-7x=5x+5
      11-5=5x+7x
       6=12x
       12/6=x
        x=2