Add 36/21 and 5/45
1st number: 1 15/21, 2nd number: 5/45
36/21 + 5/45 is 115/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
36/21 = 36 × 15/21 × 15 = 540/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
5/45 = 5 × 7/45 × 7 = 35/315 - Add the two like fractions:
540/315 + 35/315 = 540 + 35/315 = 575/315 - 575/315 simplified gives 115/63
- So, 36/21 + 5/45 = 115/63
In mixed form: 152/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21+5/45 36/21+10/45 36/42+5/45 36/21+5/90 36/21+15/45 36/63+5/45 36/21+25/45 36/21+35/45