Add 36/84 and 63/40
1st number: 36/84, 2nd number: 1 23/40
36/84 + 63/40 is 561/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
36/84 = 36 × 10/84 × 10 = 360/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
63/40 = 63 × 21/40 × 21 = 1323/840 - Add the two like fractions:
360/840 + 1323/840 = 360 + 1323/840 = 1683/840 - 1683/840 simplified gives 561/280
- So, 36/84 + 63/40 = 561/280
In mixed form: 21/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/84+63/40 36/84+63/80