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Calculati:28×31+28×19+17×11+17×39

Răspuns :

28*31+28*19+17*11+17*39=
=28(31+19)+17(11+39)
=28*50+17*50
=50(28+17)
=50*45
=2250

Sper ca te-am ajutat!
868+532+187+663=
1400+850=2250