Răspuns :
a+b=35kg
b+c=26kg
a+c=29kg
2a+2b+2c=35+26+29
2a+2b+2c=90kg
2(a+b+c)=90
a+b+c=45kg
c=45-35
c=10kg
a=45-26
a=19kg
b=45-29
b=16kg
b+c=26kg
a+c=29kg
2a+2b+2c=35+26+29
2a+2b+2c=90kg
2(a+b+c)=90
a+b+c=45kg
c=45-35
c=10kg
a=45-26
a=19kg
b=45-29
b=16kg
a + b = 35
b + c = 26
a + c = 29
din a 2-a si a 3-a ecuatie scoatem b si a in functie de c si le inlocuim in prima ecuatie
b = 26 - c
a = 29 - c
29 - c + 26 - c = 35
29 + 26 - 35 = 2 c
20 = 2 c
c = 10
b = 26 - 10
b = 16
a = 29 - 10
a = 19
b + c = 26
a + c = 29
din a 2-a si a 3-a ecuatie scoatem b si a in functie de c si le inlocuim in prima ecuatie
b = 26 - c
a = 29 - c
29 - c + 26 - c = 35
29 + 26 - 35 = 2 c
20 = 2 c
c = 10
b = 26 - 10
b = 16
a = 29 - 10
a = 19