Answers

Add 72/42 and 49/15

1^st number: 1 30/42, 2^nd number: 3 4/15

72/42 + 49/15 is 523/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 15 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 42 × 5 = 210,
   72/42 = 72 × 5/42 × 5 = 360/210
3. Likewise, for the 2nd fraction, since 15 × 14 = 210,
   49/15 = 49 × 14/15 × 14 = 686/210
4. Add the two like fractions:
   360/210 + 686/210 = 360 + 686/210 = 1046/210
5. 1046/210 simplified gives 523/105
6. So, 72/42 + 49/15 = 523/105
   In mixed form: 4103/105

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁷²/₄₂+⁹⁸/₁₅ ⁷²/₈₄+⁴⁹/₁₅ ⁷²/₄₂+⁴⁹/₃₀ ⁷²/₄₂+⁴⁹/₄₅ ⁷²/₄₂+⁴⁹/₇₅

Add Fractions Calculator