Add 63/42 and 70/35
1st number: 1 21/42, 2nd number: 2 0/35
63/42 + 70/35 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 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 35 × 6 = 210,
70/35 = 70 × 6/35 × 6 = 420/210 - Add the two like fractions:
315/210 + 420/210 = 315 + 420/210 = 735/210 - 735/210 simplified gives 7/2
- So, 63/42 + 70/35 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84+70/35