Решите плизз! !! 6,15+(-0,5)+(7,65+(-2,3))=?

Question

Решите плизз! !! 6,15+(-0,5)+(7,65+(-2,3))=?

Answer 1

6.15+(-0.5)+(7.65+(-2.3))=6.15-0.5+7.65-2.3=11

Answer 2

6.15+(-0.5)+(7.65+(-2.3))=
=5.65+5.35=11