Răspuns :
A+b+c totul supra trei =7,04
A=11,02
B=7,10
C=?
(11,02+7,10+c)/3=7,04
18,12+c=7,04×3
18,12+c=21,,12
C=21,12-18,12
C=3
a+b+c:3=7,04
a=11.02
b=7.1
c=?
11,02+7,1+c:3=7,04
18,12+c=7,04x3
18,12+c=21,21
c=21,21-18,12
c=3
a=11.02
b=7.1
c=?
11,02+7,1+c:3=7,04
18,12+c=7,04x3
18,12+c=21,21
c=21,21-18,12
c=3