Add 72/70 and 63/54
1st number: 1 2/70, 2nd number: 1 9/54
72/70 + 63/54 is 461/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
72/70 = 72 × 27/70 × 27 = 1944/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
63/54 = 63 × 35/54 × 35 = 2205/1890 - Add the two like fractions:
1944/1890 + 2205/1890 = 1944 + 2205/1890 = 4149/1890 - 4149/1890 simplified gives 461/210
- So, 72/70 + 63/54 = 461/210
In mixed form: 241/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: