Add 70/35 and 84/63
1st number: 2 0/35, 2nd number: 1 21/63
70/35 + 84/63 is 10/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
70/35 = 70 × 9/35 × 9 = 630/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Add the two like fractions:
630/315 + 420/315 = 630 + 420/315 = 1050/315 - 1050/315 simplified gives 10/3
- So, 70/35 + 84/63 = 10/3
In mixed form: 31/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: