b) ( 2 7 3 ) 8+7+60 75 15
ma =(---- +----+------) :3=-------------- = --------=---------=(cu virgula 3.75)
( 5 20 1 ) 20 20 4
c)(1.2+3.6):2=4.8:2=2.4
d)(1.24+2.25+5.63):3=9.12:3=3.04
e)(0.5+0.9+1.2+3.12):4=5.72:4=1.43
f)(11.2 1 ) 56+1 57
(-------+-------- ) : 2 = ----------=---------=( daca vrei cu virgula =11.4)
( 1 5 ) 5 5