(7x3)(5x7)=
rezolvarea in doua moduri va rog urgent


Răspuns :

a)=21×35=735
b)=(7×7)×(3×5)=49×15=735
1)...(7x3)(5x7)=21x35=735.......2)...(7x7)(3x5)=49x15=735.....sper ca te-am putut ajuta!O zi super!