Răspuns :
Răspuns:
ex 7:
C=27
a-b=54
87a-87b-54c=87( a-b)-54c=87×54-54×27=54(87-27)=54× 60=3240
ex 9
27 +3[(c3÷330+3327-3)]÷913
27+3 ×[110+3324]÷913
27+3×3434÷913
27+10302÷913
27+11=38
Răspuns:
ex 7:
C=27
a-b=54
87a-87b-54c=87( a-b)-54c=87×54-54×27=54(87-27)=54× 60=3240
ex 9
27 +3[(c3÷330+3327-3)]÷913
27+3 ×[110+3324]÷913
27+3×3434÷913
27+10302÷913
27+11=38