Answers

Add 63/28 and 42/40

1^st number: 2 7/28, 2^nd number: 1 2/40

63/28 + 42/40 is 33/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 40 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 28 × 10 = 280,
   63/28 = 63 × 10/28 × 10 = 630/280
3. Likewise, for the 2nd fraction, since 40 × 7 = 280,
   42/40 = 42 × 7/40 × 7 = 294/280
4. Add the two like fractions:
   630/280 + 294/280 = 630 + 294/280 = 924/280
5. 924/280 simplified gives 33/10
6. So, 63/28 + 42/40 = 33/10
   In mixed form: 33/10

MathStep (Works offline)

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

Related: ⁶³/₂₈+⁸⁴/₄₀ ⁶³/₅₆+⁴²/₄₀ ⁶³/₂₈+⁴²/₈₀ ⁶³/₈₄+⁴²/₄₀

Add Fractions Calculator