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Cat ori cat face 21 ( cu nr nat. si cu fractii zecimale)...???

Răspuns :

1*21=21
7*3=21
.0.5*42=21
26.25*0.8
(-7)*(-3)=21
0.1*210=21


7×3=21
3×7=21
21×1=21
1×21=21
0.5×0.42=21
(-7)×(-3)=21
Succes la scoala!!!!