Add 63/72 and 36/70
63/72 + 36/70 is 389/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
63/72 = 63 × 35/72 × 35 = 2205/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
36/70 = 36 × 36/70 × 36 = 1296/2520 - Add the two like fractions:
2205/2520 + 1296/2520 = 2205 + 1296/2520 = 3501/2520 - 3501/2520 simplified gives 389/280
- So, 63/72 + 36/70 = 389/280
In mixed form: 1109/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/72+72/70