Răspunsuri

2014-05-12T09:52:48+03:00


x-pret initial

x-10/100x=

=x-x/10

se amplifica primul x cu 10

=10x/10-x/10

=9x/10

9x/10=27000

9x=270000

x=30000(pret initial)



x-primul numar

x+1-al doilea numar

x+2=al treilea numar

x+x+1+x+2=132

3x+3=132

3x=129

x=43(primul nr)

43+1=44(al doilea numar)

43+2=45(al treilea numar)


2014-05-12T10:04:19+03:00
X= suma initiala
x-10x/100=27 000
100x-10x=2 700 000
90x=2 700 000
x=30 000

a=a
b=a+1
c=a+2

a+a+1+a+2=132
3a+3=132
3a=132--3
3a=129
a=43

b=43+1
b=44

c=43+2
c=45