Question

va rog rapid pe foaie si cu calcul inscris plzzzzzz

Dau coroana!!!!
Si 10 puncte plzzz​

Answer 1

a=18

b+c=57

a) a+b+c=18+57=75

b) a+5*b+5*c=a+5*(b+c)=18+5*57=303

c) 3*a+2*b+2*c=3*a+2*(b+c)=3*18+2*57=168

d) a*b+a*c+7*b+7*c=a*(b+c)+7*(b+c)=(b+c)*(7+a)=57*(7+18)=57*25=1425

Succes.