Question

a+b+c=366 știind ca b:a=2rest7 si c:b=2rest2 aflați cele 3nr

Answer 1

a+b+c=366

b:a=2rest7⇒b=ax2+7

c:b=2rest2 ⇒c=bx2+2⇒c=(2a+7)x2+2=4a+14+2=4a+16

a+2a+7+4a+16=366⇒7a=366-16-7=343⇒a=343:7=49

b=2x49+7=105

c=2x105+2=212

V: 49+105+212=366