Add 30/63 and 1/40
30/63 + 1/40 is 421/840.
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,
30/63 = 30 × 40/63 × 40 = 1200/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
1/40 = 1 × 63/40 × 63 = 63/2520 - Add the two like fractions:
1200/2520 + 63/2520 = 1200 + 63/2520 = 1263/2520 - 1263/2520 simplified gives 421/840
- So, 30/63 + 1/40 = 421/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/63+1/40 30/63+2/40 30/63+1/80 90/63+1/40 30/63+3/40 30/63+5/40 30/63+7/40