Question

simplifique e reduza os termos semelhantes
b) - (x + 1 ) + 2 ( x + 3 ) + (2 x - 4)

Answer 1

b)

= - (x + 1 ) + 2.( x + 3 ) + (2 x - 4)
= - x - 1 + 2x + 6 + 2x - 8
= - x + 2x + 2x - 1 + 6 - 8
= - x + 4x + 5 - 8
= 3x - 3