Răspuns:
[tex]400+\frac{480}{100} *4-(\frac{640}{100}*2+4*(20+12+18))=\\ 400+\frac{480}{25}-(\frac{640}{50}+200)=\\400+\frac{96}{5} -(\frac{128}{10}+200)=\\\\\frac{4000+192-128-2000}{10}=2064/10=206,4[/tex]
(p.s. asta e in caz ca e simbolul chiar % )
daca e impartire e 400+120-(320+200)=400+120-520=520-520 =0
