Rezolvare:
a+b+c=710
b=2a+15
c=3b-25; c=3*(2a+15)-25
c=6a+45-25=6a+20
a+2a+15+6a+20=710
9a+35=710; 9a=675; a=75
b=2*75+15=165
c=6*75+20=470
Sper ca ti-am fost de folos
X-primul nr.
2x+15-al doilea nr.
3(2x+15)-25 al 3lea nr.
datele problemei!
x+2x+15+3(2x+15)-25=710(ecuatia problemei)
rezolvare: 3x+6x+45-25=710 9x+20=710
9x=690
x=690/9
x=230/3 (simplificat prin 3)
Gata! Funda?