Add 9/40 and 70/63
1st number: 9/40, 2nd number: 1 7/63
9/40 + 70/63 is 481/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
9/40 = 9 × 63/40 × 63 = 567/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
70/63 = 70 × 40/63 × 40 = 2800/2520 - Add the two like fractions:
567/2520 + 2800/2520 = 567 + 2800/2520 = 3367/2520 - 3367/2520 simplified gives 481/360
- So, 9/40 + 70/63 = 481/360
In mixed form: 1121/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/40+70/63 9/80+70/63 27/40+70/63 45/40+70/63 63/40+70/63