Add 48/40 and 1/21
1st number: 1 8/40, 2nd number: 1/21
48/40 + 1/21 is 131/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
48/40 = 48 × 21/40 × 21 = 1008/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
1/21 = 1 × 40/21 × 40 = 40/840 - Add the two like fractions:
1008/840 + 40/840 = 1008 + 40/840 = 1048/840 - 1048/840 simplified gives 131/105
- So, 48/40 + 1/21 = 131/105
In mixed form: 126/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/40+1/21 48/40+2/21 48/80+1/21 48/40+1/42 48/40+3/21 48/40+1/63 48/40+5/21 48/40+7/21