Question

Resolva as expressões :

a)14-(-10+5+3)

b)-15+[-4-(-5+20) ]


c)20-{-10+[+20-(-20+10) ] }


d)-12+(-6)-(-8-5)


Obs: Quero as contas,preciso urgentemente das contas e oa calcúlos.

Answer 1

14-(-10+5+3) =
14+2 =
16

-15+[-4-(-5+20)] =
-15+[-4-15] =
-15-18 =
-33

20-{-10+[+20-(-20+10)]} =
20-{-10+[+20+10]} =
20-{-10+30} =
20-20 =
0

-12+(-6)-(-8-5) =
-12-6+13 =
-5