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Calculati: a)-12-8+7 b)9-16-3 c) 25-28-7 d)-7-15-21 e)6-14+8 f)-9-7+11 Va rog frumos!

Răspuns :

a) = -20+7 = -13
b) 9 - 19 = -10
c) -3-7= -10
d) -(7+15+21) = -43
e) =-8+8 = 0
f) -18+11 = -7
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