Răspunsuri

2014-01-06T20:08:05+02:00
X- PRET initial.

x-0.10*x=54.

deci 0.9x=54. x=54/0.9. x=60
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2014-01-06T20:14:29+02:00
Notam x pret initial apoi x-10%egal 54 apoix-10/100xegal54 si calculezi in continuare amplificand pe x cu 100