Răspuns :
a+b+c=340
a+b=80+b+c<=> a=80+c
b=50+c
80+c+50+c+c=340
3*c=340-130
3c=210
c=210/3
c=70
b=50+70
b=120
a=80+70
a=150
Sper ca te-am ajutat!
a+b=80+b+c<=> a=80+c
b=50+c
80+c+50+c+c=340
3*c=340-130
3c=210
c=210/3
c=70
b=50+70
b=120
a=80+70
a=150
Sper ca te-am ajutat!
a+b+c=340
a+b=(b+c)+80
b=c+50
a+b=c+50+c+80
inlocuim pe a+b
c+50+c+80+c=340
3c=340-130
c=210:3
c=70
b=70+50=120
a+70+120=340
a=340-190
a=150
a+b=(b+c)+80
b=c+50
a+b=c+50+c+80
inlocuim pe a+b
c+50+c+80+c=340
3c=340-130
c=210:3
c=70
b=70+50=120
a+70+120=340
a=340-190
a=150