Add 30/45 and 70/63
1st number: 30/45, 2nd number: 1 7/63
30/45 + 70/63 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
30/45 = 30 × 7/45 × 7 = 210/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
70/63 = 70 × 5/63 × 5 = 350/315 - Add the two like fractions:
210/315 + 350/315 = 210 + 350/315 = 560/315 - 560/315 simplified gives 16/9
- So, 30/45 + 70/63 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+70/63 30/90+70/63 90/45+70/63