Question

me ajudemm
53-{20-[30-(15-1+6)+2]}

Answer 1

53-{20-[30-(15-1+6)+2]}=
53-{20-[30-(+14+6)+2]}=
53-{20-[30-(+20)+2]}=
53-{20-[30-20+2]}=
53-{20-[+10+2]}=
53-{20-[+12]}=
53-{20-12}=
53-{+8}=
53-8=
45.

Espero ter ajudado!♡!♡!♡!♡!

Answer 2

Boa noite.

53-{20-[30-(15-1+6)+2]} = 

53-{20-[30-(21-1)+2]} = 
53-{20-[30-(20)+2]} = 
53-{20-[30-20+2]} = 
53-{20-[32-20]} = 
53-{20-[12]} = 
53-{20-12} = 
53-{8} = 
53-8 = 45

Elimina:

1) - parênteses ( )
2) - colchetes [ ]
3) - cheves { }

Regras dos sinais:

+ com + = +
- com - = +
- com + = -
+ com - = -

Bons estudos! :-)