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Daca a+b=4 si c=5,calculati:
a) 5a+3c+5b
b) 10a-2c+10b
c) ( 4a+c+4b)*[3c- (2a+2b)]
DAU COROANA SI PUNCTE IN PLUS!!!!GRABITIVA!!!!!!!!!!!!


Răspuns :

A,b=4:2=2 c=5 A. 5a=5+2=7 3c=3+5=8 5b= 5+2= 7+8+7=22 B.10+2=12 2+5=7 10+2 12+7+12=21 C.(4+2 +5+4+2) x [3+5-(2+2 +2+2 )]=17