Add 35/15 and 90/63
1st number: 2 5/15, 2nd number: 1 27/63
35/15 + 90/63 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
35/15 = 35 × 21/15 × 21 = 735/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
90/63 = 90 × 5/63 × 5 = 450/315 - Add the two like fractions:
735/315 + 450/315 = 735 + 450/315 = 1185/315 - 1185/315 simplified gives 79/21
- So, 35/15 + 90/63 = 79/21
In mixed form: 316/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/15+90/63 35/30+90/63 35/45+90/63 35/75+90/63