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a fost răspuns

determinati numerl naturale a;b;c, stiind ca;
a)a+b=100, b+c=110, a+c=90
b)a+b=84, b+c=64, a+c=34

Răspuns :


a=40, b=60, c=50

a=27, b=57, c=7


a+b+b+c+a+c=100+110+90

a+b+c=150

a+b=100, c=150-100, c=50

b+c=110, a=150-110, a=40

a+c=90, b=150-90, b=60

procedeaza la fel si la urmatorul exercitiu
2a+2b+2c=100+110+90=300 inseamna ca a+b+c=150
a+b=100 deci 100+c=150,c=150-100, c=50 
b+c=110 ,b+50=110, b=110-50  b=60 
a+c=90   a+50=90   a=90-50      a=40