Răspuns :
x+x+1+x*3=61
x+x+3x=61-1
5x=60
x=60:5
x=12 (primul nr)
12+1=13 (al doilea nr)
12*3=36 (al treilea nr)
x+x+3x=61-1
5x=60
x=60:5
x=12 (primul nr)
12+1=13 (al doilea nr)
12*3=36 (al treilea nr)