Question

-{-2+[+3-(10-5+12)-3]+10}
Expressão numérica

Answer 1

Olá,

−(−2+3−(10−5+12)−3+10)

−(−2+3−(5+12)−3+10)

−(−2+3−17−3+10)

−(−2+−14−3+10)

−(−2+−17+10)

−(−19+10)

−(−9)

=9