Answers

Add 21/45 and 70/49

1^st number: 21/45, 2^nd number: 1 21/49

21/45 + 70/49 is 199/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 49 is 2205
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2205
2. For the 1st fraction, since 45 × 49 = 2205,
   21/45 = 21 × 49/45 × 49 = 1029/2205
3. Likewise, for the 2nd fraction, since 49 × 45 = 2205,
   70/49 = 70 × 45/49 × 45 = 3150/2205
4. Add the two like fractions:
   1029/2205 + 3150/2205 = 1029 + 3150/2205 = 4179/2205
5. 4179/2205 simplified gives 199/105
6. So, 21/45 + 70/49 = 199/105
   In mixed form: 194/105

MathStep (Works offline)

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

Related: ⁴²/₄₅+⁷⁰/₄₉ ²¹/₉₀+⁷⁰/₄₉ ²¹/₄₅+⁷⁰/₉₈ ⁶³/₄₅+⁷⁰/₄₉

Add Fractions Calculator