Add 70/63 and 84/40
1st number: 1 7/63, 2nd number: 2 4/40
70/63 + 84/40 is 289/90.
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,
70/63 = 70 × 40/63 × 40 = 2800/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
84/40 = 84 × 63/40 × 63 = 5292/2520 - Add the two like fractions:
2800/2520 + 5292/2520 = 2800 + 5292/2520 = 8092/2520 - 8092/2520 simplified gives 289/90
- So, 70/63 + 84/40 = 289/90
In mixed form: 319/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/63+84/80