a). a*(b+c)+60=
a*b+a*c+60=
45+35+60=140
b). a*(b-c)*3=
( a*b-a*c)*3=
( 45-35)*3=10*3=30
c). a*(b+c)+72=
a*b+a*c+72=
36+12+72=120
d). a*(b-c)-6=
a*b-a*c-6=
36-12-6=18
9*8+7*10=72+70=142
cate locuri sunt la 9 mese ?
9*8=72
cate locuri sunt la 7 mese ?
7*10=70
cate locuri sunt in total ?
70+72=142