Răspuns:
( 40+6)×100-[25+(299-231)]+12=
46×100-(25+68)+12=
4600-93+12=
4.507+12=4.519
Explicație pas cu pas:
(240:4+6)*100-[25+(299-77*3)]+12=
=(60+6)*100-[25+(299-231)]+12=
=66*100-(25+68)+12=
=66*100-93+12=
=6600-93+12=
=6507+12=
=6519
