Question

Transformati in fractii ordinare: 1,5; 3,(6); 1,2(6); 0,32(47)

Answer 1

1,5 = 15 / 10 = 3 /2 
3,(6)  = 3 + 0,(6)  = 3 + 6 /9 = 3 + 2 /3 = ( 3·3 +2) / 3 = 11 / 3 
1,2(6) = 1 + 0,2(6) = 1 + ( 26 - 2 ) /90 = 1 + 24 /90 = 1 + 4 / 15 = ( 1·15 + 4) /15 =
   = 19 / 15 
0,32(47) = ( 3247 - 32 ) / 9900 = 3215 /9900 = 643 / 1980