Add 7/63 and 45/40
1st number: 7/63, 2nd number: 1 5/40
7/63 + 45/40 is 89/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
7/63 = 7 × 40/63 × 40 = 280/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
45/40 = 45 × 63/40 × 63 = 2835/2520 - Add the two like fractions:
280/2520 + 2835/2520 = 280 + 2835/2520 = 3115/2520 - 3115/2520 simplified gives 89/72
- So, 7/63 + 45/40 = 89/72
In mixed form: 117/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63+45/40 7/63+90/40 7/63+45/80 21/63+45/40 35/63+45/40 49/63+45/40