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Ffilipelul
a fost răspuns

calculeaza in doua moduri
a)6x(21+44)=
b)(53+73)x3=
c)10x(11+66)=

Răspuns :

Frumusika1

a)6x(21+44)=6x65=390

  6x(21+44)=6x21+6x44=126+246=390

b)(53+73)x3=126x3=378

   (53+73)x3=53x3+73x3=159+219=378

c)10x(11+66)=10x77=770

  10x(11+66)=10x11+10x66=110+660=770