Răspuns :
a+b+c= 2050
b-a=75
c:b=5 (r 25)
b-a= 75, deci a+75=b,
b=a+75
c:b= 5(r25), deci c=5b+25
c=5b+25, b=a+75, deci c= 5(a+75)+ 25= 5a+375+25= 5a+400
a+a+75+5a+400=2050
7a= 2050-475
7a=1575
a=225
b= 225+75=300
c= 5 x225 + 400= 1525
b-a=75
c:b=5 (r 25)
b-a= 75, deci a+75=b,
b=a+75
c:b= 5(r25), deci c=5b+25
c=5b+25, b=a+75, deci c= 5(a+75)+ 25= 5a+375+25= 5a+400
a+a+75+5a+400=2050
7a= 2050-475
7a=1575
a=225
b= 225+75=300
c= 5 x225 + 400= 1525