Question

(a-16)x(b-16)x(c-16)=(30:6)x(36:6)x(40:10)
Atenţie:b

Answer 1

( a - 16 ) x ( b - 16 ) x ( c - 16) = ( 30 : 6 ) x ( 36 : 6 ) x ( 40 : 10 )
( a - 16 ) x ( b - 16 ) x ( c - 16 ) =5 + 6 + 4
( a - 16 ) x ( b - 16 ) x ( c - 16 ) = 15
avem un produs de 3 factori care este egal cu 15
b < a < c
1x 3 x 5 = 15
c - 16 = 5
a  - 16 = 3
b -16 = 1
am respectat conditia de mai sus
a - 16 = 3
a = 3 + 16
a = 19

b - 16 = 1
b = 1 + 16
b = 17

c- 16 = 5
c= 5 + 16
c= 21
verificam
( a - 16 ) x ( b - 16 ) x ( c- 16 ) =15
( 19 - 16 ) x ( 17 - 16 ) x ( 21 - 16 ) =3 x 1 x 5 = 15