Question

Fie a=12 si b+c=13.Calculati:
a)9•(b+c)+13•a
b)5•a+10•b+10•c
Urgent,va rog
Dau coronita​

Answer 1

Răspuns:

Explicație pas cu pas:

a)9•(b+c)+13•a =

9•13+13•12 =

13•(9+12) =

13•21 = 273

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b)5•a+10•b+10•c =

5•12+10•(b+c) =

60+10•13=

6•10+10•13=

10•(6+13)=

10•18=180

Answer 2

Explicație pas cu pas:

a) 9×13+13×12=13×(9+12)=13×21=273

b)5×12+10×13=60+130=190