Ajutor ex 3 ajutor va dau puncte

a) 13456+12458-9000-2599=
=25923-6401=
=18522
b) 36177+7087+10000+999=
=106264+10999=
=117263
c) 100000-500001-28460-8500-3900=
=100000-471541-4600=
=28459-4600=
=24859