Question

o valor da expressão (-9)+(+5)-(-3)-(+8)+(-2)

Answer 1

-9+5+3-8-2= -11 lembrando que - com - dá + 

Answer 2

$\Large \text { \sf Explicac_{\!\!\!,} \tilde{a}o \dfrac {} {} :}$

$\Large \sf (-9)+(+5)-(-3)-(+8)+(-2) \dfrac {} {}\\\Large \sf -9 + 5 +3 -8 -2 \dfrac {} {}\\\Large \sf -4+3 -8 -2 \dfrac {} {}\\\Large \sf -1 -8 -2 \dfrac {} {}\\\Large \sf -9 - 2 \dfrac {} {}\\\Large \sf -11 \dfrac {} {}$