Question

In trei magazii sunt 1545 t de grau . In primele doua sunt 745t iar in ultimele doua sunt 927t.Cate t sunt in fiecare magazie?

Answer 1

a + b + c = 1545 t
a + b = 745 t
b + c = 927 t
a = 1545 - 927
a = 618

a + b = 745 t
618 + b = 745 t
b = 745 - 618
b = 127

b + c = 927 t
127 + c = 927 t
c = 927 - 127
c = 800

Answer 2

a+b+c=1545; a+b=745=>a=745-b; b+c=927=>c=927-b; 745-b+b+927-b=1545 <=>745+927-1545=b=>b=1672-1545=127; a=745-127=618;c=927-127=800