0,3333.. = 0,(3)
-1,3212121 = -1,( 321 )
2,513513513 = 2,5(135)
13,26535353 = 13, 26(53)
Ps : k chắc
Ta có :
\(0,333333...=0,\left(3\right)\)
\(-1,3212121...=-1,3\left(21\right)\)
\(2,513513513...=2,\left(513\right)\)
\(13,26535353...=13,26\left(53\right)\)