👤

A=17/9
B=3×A
C= reprezinta 2/17 din suma dintre A si B
A+2B+3C=?


Răspuns :

B=17/3
A+B=17/9 + 17/3 = (17+17×3)/9 = (17+51)/9 = 68/9
C=68/9 × 2/17 = 136/153
17/9 + 34/3 + 136/51 =
9=3^2
51=3×17
_______
c.m.m.m.c. = 3^2×17 = 153 numitor comun
(17×17+34×51+136×3)/153 =
(289+1734+408)/153 =
2431/153 =
15,(8)