Answers

Add 40/90 and 84/64

1^st number: 40/90, 2^nd number: 1 20/64

40/90 + 84/64 is 253/144.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 64 is 2880
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2880
2. For the 1st fraction, since 90 × 32 = 2880,
   40/90 = 40 × 32/90 × 32 = 1280/2880
3. Likewise, for the 2nd fraction, since 64 × 45 = 2880,
   84/64 = 84 × 45/64 × 45 = 3780/2880
4. Add the two like fractions:
   1280/2880 + 3780/2880 = 1280 + 3780/2880 = 5060/2880
5. 5060/2880 simplified gives 253/144
6. So, 40/90 + 84/64 = 253/144
   In mixed form: 1109/144

MathStep (Works offline)

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

Related: ⁸⁰/₉₀+⁸⁴/₆₄

Add Fractions Calculator