Answers

Add 21/90 and 63/49

1^st number: 21/90, 2^nd number: 1 14/49

21/90 + 63/49 is 319/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 49 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 90 × 49 = 4410,
   21/90 = 21 × 49/90 × 49 = 1029/4410
3. Likewise, for the 2nd fraction, since 49 × 90 = 4410,
   63/49 = 63 × 90/49 × 90 = 5670/4410
4. Add the two like fractions:
   1029/4410 + 5670/4410 = 1029 + 5670/4410 = 6699/4410
5. 6699/4410 simplified gives 319/210
6. So, 21/90 + 63/49 = 319/210
   In mixed form: 1109/210

MathStep (Works offline)

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

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

Add Fractions Calculator