Question

Va rog ajutați-mă la 2 dau coroana

Answer 1

Răspuns:.............................................

Explicație pas cu pas:

Answer 2

Răspuns:

1) ⁴⁾7/6 , ³⁾21/8 , ⁶⁾11/4 , ⁸⁾8/3

28/24 , 63/24 , 66/24 , 64/24 avem acelasi numitor comun

ordonam crescator : 7/6 , 21/8 , 8/3 , 11/4

_____________

2) a+b/5=17/5

c+d/3=26/6

b/5=> b<5=>b=0,1,2,3,4

a=17/5-b/5

a=(17-b)/5=>a=(17-2)/5=>a=15/5=>a=3

b=2

c+d/3=(26/6)⁽²

d < 3

c+d/3=13/3=>c=13/3-d/3=>c=(13-d)/3=>d=0,1,2

c=(13-1)/3=>c=12/3=>c=4

d=1

ac+bd=3·4+2·1=12+2=14