Add 70/42 and 60/63
1st number: 1 28/42, 2nd number: 60/63
70/42 + 60/63 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
60/63 = 60 × 2/63 × 2 = 120/126 - Add the two like fractions:
210/126 + 120/126 = 210 + 120/126 = 330/126 - 330/126 simplified gives 55/21
- So, 70/42 + 60/63 = 55/21
In mixed form: 213/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84+60/63