Add 28/63 and 36/40
28/63 + 36/40 is 121/90.
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,
28/63 = 28 × 40/63 × 40 = 1120/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
36/40 = 36 × 63/40 × 63 = 2268/2520 - Add the two like fractions:
1120/2520 + 2268/2520 = 1120 + 2268/2520 = 3388/2520 - 3388/2520 simplified gives 121/90
- So, 28/63 + 36/40 = 121/90
In mixed form: 131/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63+36/40 28/63+72/40 28/63+36/80 84/63+36/40