Answers

Add 42/40 and 48/90

1^st number: 1 2/40, 2^nd number: 48/90

42/40 + 48/90 is 19/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 90 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 40 × 9 = 360,
   42/40 = 42 × 9/40 × 9 = 378/360
3. Likewise, for the 2nd fraction, since 90 × 4 = 360,
   48/90 = 48 × 4/90 × 4 = 192/360
4. Add the two like fractions:
   378/360 + 192/360 = 378 + 192/360 = 570/360
5. 570/360 simplified gives 19/12
6. So, 42/40 + 48/90 = 19/12
   In mixed form: 17/12

MathStep (Works offline)

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

Related: ⁸⁴/₄₀+⁴⁸/₉₀ ⁴²/₄₀+⁹⁶/₉₀ ⁴²/₈₀+⁴⁸/₉₀

Add Fractions Calculator