Question

-(8+9-11)=
9-11+13+2-4-5+9=
-(20+17)-16+7-15+3=
-(-1-2-3)-(5-5+4+6+9)=
(-1+2-9)-(5-5)-4+5=
sumas y restas combinadas

Answer 1

Explicación paso a paso:

-8-8+11=-5

9+9+13+2-11-4-5=13

-20-17-16+7-15+3=-58

1+2+9-5+5-4-6-9=-7

-1+2-9-5+5-4+5=-7