Add 63/42 and 70/5
1st number: 1 21/42, 2nd number: 14 0/5
63/42 + 70/5 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 5 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Likewise, for the 2nd fraction, since 5 × 42 = 210,
70/5 = 70 × 42/5 × 42 = 2940/210 - Add the two like fractions:
315/210 + 2940/210 = 315 + 2940/210 = 3255/210 - 3255/210 simplified gives 31/2
- So, 63/42 + 70/5 = 31/2
In mixed form: 151/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+70/5 63/42+70/10 63/42+70/15 63/42+70/25 63/42+70/35