Question

Analizeaza si rezolva : a) Daca axb =24 , atunci ax5xb =  ....            b) Daca a= 15 si b-c = 7 , atunci a x b-a x c = .......   c) Daca a= 10 si b + c =17 ,atunci a x b + a x c = .....   d)  Daca a x b =11 si a x c = 19 , atunci a x (b + c ) = .....

Answer 1

a) a*5*b=5*(a*b)=5*24=120
b) a*b-a*c=a(b-c)=15*7=105
c) a*b+a*c=a(b+c)=10*17=170
d) a*(b+c)=a*b+a*c=11+19=30

Answer 2

a)ax5xb=24x5=120. b)axb-axc=(dam factor comun pe a si iese)=ax(b-c)=15x7=105. c)axb+axc=ax(b+c)=10x17=170. d)ax(b+c)=axb+axc=11+19=30