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2014-10-22T19:09:08+03:00
X+ 10/100x(din)x=y
y-10/100x(din)y=1980
y-1/10xy=1980
y-y/10=1980 | x 10
10y-y=19800
9y=19800
y=2200 lei


x+1/10xx=2200
x+x/10=2200 | x10
10x+x=22000
11x=22000
x=2000 lei

x-pretul initial
y-noul pret


Te iubesc!! Omg!! Deci nu imi aminteam porcaria asta!! Mersi mai!
Cu placereeee !