Fie x (/-----/) numarul care se scade⇒ a= x+89, b=x+162, c=x+115
Folosim metoda figurativa
a /----/..89..
b /----/.....162......
c /----/.....115.. suma este 399
399 - (89+ 162+ 115)= 399 - 366 =33 suma a 3 segmente egale
33:3=11 ⇒ 11= valoarea unui segment = x ⇒a =11+89=100, b=11+162=173, c=11+115=126
