deschide parantezele apoi calculati :
a)25×(2+4)
12×(10-3)
b) (3+2)×13
(10-2)×15
c)21×(2+3+4)
4×(100-20-15)
d)(31+250-12)×2
(50-15+22)×4
ajutatima varog mult?
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