Question

suma dintre sesimea,treimea si jumatatea unui nr. este 402. afla nr.
Va roog repede!!

Answer 1

a/6+a/3+a/2=402
a/6+2a/6+3a/6=402
6a/6=402
a=402
proba:
402:6=67
402:3=134
402:2=201
67+134+201=402