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Calculeaza, efectuand mai intati suma/diferenta: 4x(123+354)=
6x(325+435)=
5x(453-188)=
6x(874-657)=
Repede va rog frumos


Răspuns :

1. 4×(123+354)=4×477=1908
2. 6×(435+325)=6×760=4560
3.5×(453-188)=5×256=1325
4.6×(874-657)=1302