Add 42/10 and 63/42
1st number: 4 2/10, 2nd number: 1 21/42
42/10 + 63/42 is 57/10.
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,
42/10 = 42 × 21/10 × 21 = 882/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Add the two like fractions:
882/210 + 315/210 = 882 + 315/210 = 1197/210 - 1197/210 simplified gives 57/10
- So, 42/10 + 63/42 = 57/10
In mixed form: 57/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10+63/42 42/20+63/42 42/10+63/84 42/30+63/42 42/50+63/42 42/70+63/42