Add 42/30 and 15/63
1st number: 1 12/30, 2nd number: 15/63
42/30 + 15/63 is 172/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
42/30 = 42 × 21/30 × 21 = 882/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
15/63 = 15 × 10/63 × 10 = 150/630 - Add the two like fractions:
882/630 + 150/630 = 882 + 150/630 = 1032/630 - 1032/630 simplified gives 172/105
- So, 42/30 + 15/63 = 172/105
In mixed form: 167/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+15/63 42/30+30/63 42/60+15/63 42/30+45/63 42/90+15/63 42/30+75/63