Question

ex 9
va rog
e urgent

Answer 1

4,15 = 415 / 100 = 83/20
2,(18) = (218 - 2)/99 = 216/99 = 24/11
0,3(54) = (354 - 3)/990 = 351/990 =  39/110
0,35(4) = (354 - 35)/900 = 319/900
0,91(6) = (916 - 91)/900 = 825/900 = 33/36 = 11/12
1,8(6) = (186 - 18)/90 = 168/90 = 56/30 = 28/15
5,02(7) = (5027 - 502)/900 = 4525/900 = 182/36 = 91/12
0,4(9) = (49 - 4)/90 = 45/90 = 1/2
0,41(16) = (4116 - 41)/9900 = 4075 / 9900 = 163/396
0,11(36) = (1136 - 11)/9900 = 1125/9900 = 45/396 = 5/44
1,0025 = 10025/10000 = 401/400
0,008 = 8/1000 = 2/250 = 1/125