Ajutor 9990+(9×5+25):(7×5-28)-(1600+227×37)=

Răspuns :

9990+(9×5+25):(7×5-28)-(1600+227×37)=
9990+(45+25):(35-28)-(1600+8399)=
9990+70:7-9999=
9990+10-9999=
10000-9999=1
9990+(9×5+25):(7×5-28)-(1600+227×37)=
9990+(45+25):(35-28)-(1600+8399)=
9990+70:7-9999=
9990+10-9999=
10.000-9999=
=1

Sper ca te-am ajutat!