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# How do you solve: 21 11/12 plus 17 5/12

The problem is $21 \frac{11}{12} + 17 \frac{5}{12}$ Add the whole numbers $21 + 17 = 38$ Match up the fractions and make sure the denominators are the same (they are) $\frac{11}{12} + \frac{5}{12}$ $= \frac{16}{12}$ Break down the fraction  $16$ ÷ $12 = 1 \frac{4}{12}$ Reduce-You need to find a common factor for both the numerator and denominator $4$ ÷ $4$ $= 1$ $12$ ÷ $4 = 3$ Combine everything $38 + 1\frac{1}{3} =39 \frac{1}{3}$ Answer: $39 \frac{1}{3}$