Răspuns :
a-(148x15)=13x12x11
148x15 =... calculeaza tu (b)
a-b=13x12x11 (c)
aflam a daca adunam b cu c
148x15 =... calculeaza tu (b)
a-b=13x12x11 (c)
aflam a daca adunam b cu c
x--(148x15)=13x12x11
148x15 =.2220-y
x-y=13x12x11 =.. o sa-ti de-a z
148x15 =.2220-y
x-y=13x12x11 =.. o sa-ti de-a z