Question

a) – 5x + 4 – (– x + 2) =

b) 5 – [ 8 + (– 7 – 3) ] + ( 4 – 2) =

Answer 1

Resposta:

A）-5X+4-(-X+2) =

-4X+4-2

-4X+2

-2（2X-1）

B）5 – [ 8 + (– 7 – 3) ] + ( 4 – 2) =

5 – [ 8 + (–10) ] + ( 4 – 2) =

5 – [ 8 + (–10) ] + 2)=

5 – (–2) + 2)=9

Explicação passo-a-passo: