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Gugustiuc11
a fost răspuns

Dterminati numerele naturale care verifica egalitatile:

a) (x+200):20=45
b) (320+x)×15=5100
c) 4x-1000:50-620:4=5
d) (3×x+5×x):8=100
e) 15×(36×x-12×x):120=3
f) 7×(15×x+35×x):10+2×x=185