Question

Am nevoie de ajutor la mate =]] cerinta : scrieti sub forma de fractii ordinare , ireductibile
a) 0,4 ; 0,25 ; 8,375
b) 0,(6) ; 4,(27) ; 30,(123)
c) 0,6(54) ; 0,24(3) ; 3,0(6)
multumesc =]]

Answer 1

Răspuns:

Explicație pas cu pas:

a)

0,4 = 4/10 = 2/5 → fractie ireductibila

0,25 = 25/100 = 1/4

8,375 = 8375/1000 = 335/40 = 67/8

b)

0,(6) = 6/9 = 2/3

4,(27) = (427-4)/99 = 423/99 = 141/33 = 47/11

30,(123) = (30123 - 30 ) /999 = 30093/999 = 10031/333

c)

0,6(54) = (654-6)/990 = 648/990= 324/495 =108/165 = 36/55

0,24(3) = (243-24)/900 = 219/900 = 73/300

3,0(6) = (306 - 30 ) /90 = 276/90 = 92/30 = 46/15

Answer 2

0, 4 = 4 / 10 = 2 / 5

0, 25 = 25 / 100 = 1 / 4

8, 375 = 8375 / 1000 = 67 / 8

0, ( 6 ) = 6 / 9 = 2 / 3

4, ( 27 ) = ( 427 - 4 ) / 99 = 423 / 99 = 47 / 11

30, ( 123 ) = ( 30123 - 30 ) / 999 = 30093 / 999 = 10031 / 333

0, 6 ( 54 ) = ( 654 - 6 ) / 990 = 648 / 990 = 36 / 55

0, 24 ( 3 ) = ( 243 - 24 ) / 900 = 219 / 900 = 73 / 300

3, 0 ( 6 ) = ( 306 - 30 ) / 90 = 276 / 90 = 46 / 15