Add 72/10 and 1/42
1st number: 7 2/10, 2nd number: 1/42
72/10 + 1/42 is 1517/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
1/42 = 1 × 5/42 × 5 = 5/210 - Add the two like fractions:
1512/210 + 5/210 = 1512 + 5/210 = 1517/210 - So, 72/10 + 1/42 = 1517/210
In mixed form: 747/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10+2/42 72/20+1/42 72/10+1/84 72/10+3/42 72/30+1/42 72/10+5/42 72/50+1/42 72/10+7/42 72/70+1/42