Răspunsuri

2014-11-14T18:38:30+02:00
6374-10*x+3=18*21-1
674-10*x+3=378-1
674-10*x+377
674-10*x=377-3
674-10*x=374
10*x=674-374
10*x=300
x=300:10
x=30

V=674-10*30+3=18*21
374-300+3=18*21-1
374+3=377
377=377