Question

9 + 7 - {4 + [ - 7 - ( - 3 - 9 + 10 ) ] }

3 + 7 - { 4 - [- 7 + ( - 3 + 9 - 10 ) ] }

Answer 1

-3-9+10= -2 / -7-(-2)=-7+2= -5  / 4-5=-1  / 9+7-(-1)= 9+7+1=17
Resposta final: 17

-3+9-10= -4 / -7-4= -11  / 4-(-11)=4+11=15  / 3+7-(+11)=3+7-11=-1
Resposta final: -1