Answers

Add 28/63 and 27/40

28/63 + 27/40 is 403/360.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 40 is 2520
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2520
2. For the 1st fraction, since 63 × 40 = 2520,
   28/63 = 28 × 40/63 × 40 = 1120/2520
3. Likewise, for the 2nd fraction, since 40 × 63 = 2520,
   27/40 = 27 × 63/40 × 63 = 1701/2520
4. Add the two like fractions:
   1120/2520 + 1701/2520 = 1120 + 1701/2520 = 2821/2520
5. 2821/2520 simplified gives 403/360
6. So, 28/63 + 27/40 = 403/360
   In mixed form: 143/360

MathStep (Works offline)

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

Related: ⁵⁶/₆₃+²⁷/₄₀ ²⁸/₆₃+⁵⁴/₄₀ ²⁸/₆₃+²⁷/₈₀ ⁸⁴/₆₃+²⁷/₄₀ ²⁸/₆₃+⁸¹/₄₀

Add Fractions Calculator