@engr-ali said in decimal fractions:

Assallamulikum Sir, Conversion (59)10 into binary 59/2=28-1 ? 28/2=14-0 14/2=7-0 7/2=3-1 3/2=1-1 (111001) ?

Dear @Engr-Ali ,

$(59){10} = (111011){2}$

The mistake you have made is in the first step where you divided $59/2$. It has to be $29-1$ instead of $28-1$.

Best wishes