Question

calcule o valor das expressoes 2-{3+[4-(1-2)+3]-4}

Answer 1

2-{3+[4-(1-2)+3]-4}=
2-{3+[4-(-1)+3]-4}=
2-{3+[4+1+3]-4}=
2-{3+8-4}=
2-{11-4}=
2-{7}=
2-7=
-5

Answer 2

2-{3+[4-(1-2)+3]-4}

2-{3+[4+1+3]-4}

2-{[3+8]-4}

2-[11-4]


2-7

=-5


espero ter ajudado!

boa noite!