Question

Elimine os parênteses, colchetes e chaves e reduza os termos semelhantes:

a) 20 + (3x - 4) =

b)– 2n – (n – 8) + 1 = g) {9x – [4x – (x – y) – 5y] + y} =

c)7x³ – {3x² – x – [2x – (5x³ – 6x²) – 4x]} =

Answer 1

Resposta:

A) 20+3×4 =

B) 8+1= 9×4×5 =

C) 7-3×2-5×6-4=