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[(11984-9999)•12+1985•88]:100. cu factor comun!!!!! va rog!

Răspuns :

[(11984-9999)*12+1985*88]:100
= (1985*12+1985*88):100
= 1985 (12+88):100
=1985*100:100
=198500:100=1985
( 1985*12+1958*88):100 =1985(12+88):100 =1985*100:100 =1985