Add 45/70 and 30/27
1st number: 45/70, 2nd number: 1 3/27
45/70 + 30/27 is 221/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 27 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
45/70 = 45 × 27/70 × 27 = 1215/1890 - Likewise, for the 2nd fraction, since 27 × 70 = 1890,
30/27 = 30 × 70/27 × 70 = 2100/1890 - Add the two like fractions:
1215/1890 + 2100/1890 = 1215 + 2100/1890 = 3315/1890 - 3315/1890 simplified gives 221/126
- So, 45/70 + 30/27 = 221/126
In mixed form: 195/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+30/27 45/70+60/27 45/70+30/54 45/70+90/27 45/70+30/81