For adding, , and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator.The
common denominator you can calculate as the least common multiple of both denominators - LCM(4, 3) = 12. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 4 × 3 = 12. In the following intermediate step, the fraction result cannot be further simplified by canceling.
In other words - eleven quarters minus two thirds = twenty-five twelfths.