Concept:To add unlike fractions, find the least common multiple (LCM) of the denominators, convert each fraction to an equivalent fraction with that common denominator, then add the numerators.Explanation:First, simplify 153​ to 51​ (divide numerator and denominator by 3).The denominators are 5 and 12. Their LCM is 60.Convert 51​ to 6012​ (multiply numerator and denominator by 12).Convert 127​ to 6035​ (multiply numerator and denominator by 5).Add the numerators: 12+35=47. Keep the denominator 60.The sum is 6047​.Answer:B. 6047​