Răspuns :
= [(544+336)x5 - 2552]: (900-879)=
[880x5-2552 ]:21=
[4400-2552] :21=
1848 :21= 88
[880x5-2552 ]:21=
[4400-2552] :21=
1848 :21= 88
[(544+336)x5-2552]:(900-879)
=[880x5-2552]:21
=[4400-2552]:21
=1848:21
=88
=[880x5-2552]:21
=[4400-2552]:21
=1848:21
=88