Add 40/63 and 8/18
40/63 + 8/18 is 68/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
40/63 = 40 × 2/63 × 2 = 80/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
8/18 = 8 × 7/18 × 7 = 56/126 - Add the two like fractions:
80/126 + 56/126 = 80 + 56/126 = 136/126 - 136/126 simplified gives 68/63
- So, 40/63 + 8/18 = 68/63
In mixed form: 15/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63+8/18 40/63+16/18 40/63+8/36 40/63+24/18 40/63+8/54 40/63+40/18 40/63+8/90 40/63+56/18