Răspuns :
a=4k
b=9k
(3a+8b)/8b=
(3*4k+8*9k)/8*9k=
(12k+72k)/72k=
84k/72k - k se simpifica, si simplif prin 2
42/36 - simplif prin 2
21/18 - simplif prin 3
7/6
b=9k
(3a+8b)/8b=
(3*4k+8*9k)/8*9k=
(12k+72k)/72k=
84k/72k - k se simpifica, si simplif prin 2
42/36 - simplif prin 2
21/18 - simplif prin 3
7/6
a=4k si b=9k; (3a+8b):8b=(3*4k+8*9k):8*9k ; (12k+72k):72=84k:72k-k se simplifica prin 2 si vine 42:36 se simplifica ier prin 2=>21/18 se simmplifica prin 3 si vine 7/6