Răspuns :
(a+b+c):3=19
a+b+c=19x3
a+b+c=57
a+a+1+a+2=57
3a=54
a=18
a+1=19
a+2=20
a+b+c=19x3
a+b+c=57
a+a+1+a+2=57
3a=54
a=18
a+1=19
a+2=20
[a+b+c]/3=19
a=b+1=c+2
[a+(a+1)+(a+2)]/3=19
(3a+3)/3=19
3a+3=19*3=57
3a=57-3=54
a=54:3
a=18
Sper ca te-am ajutat :>.
a=b+1=c+2
[a+(a+1)+(a+2)]/3=19
(3a+3)/3=19
3a+3=19*3=57
3a=57-3=54
a=54:3
a=18
Sper ca te-am ajutat :>.