Răspuns:
Explicație pas cu pas:
a/5 = b/12 = c/13 = a+b+c / 5+12+13 = 90/30 = 3
a = 5 x 3 = 15
b = 12 x 3 = 36
c = 13 x 3 = 39
Verificare:
a+b+c = 15+36+39 = 15+75= 90, OK.
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Răspuns:
Explicație pas cu pas:
a/5 = b/12 = c/13 = a+b+c / 5+12+13 = 90/30 = 3
a = 5 x 3 = 15
b = 12 x 3 = 36
c = 13 x 3 = 39
Verificare:
a+b+c = 15+36+39 = 15+75= 90, OK.