Add 40/15 and 45/7
1st number: 2 10/15, 2nd number: 6 3/7
40/15 + 45/7 is 191/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
40/15 = 40 × 7/15 × 7 = 280/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
45/7 = 45 × 15/7 × 15 = 675/105 - Add the two like fractions:
280/105 + 675/105 = 280 + 675/105 = 955/105 - 955/105 simplified gives 191/21
- So, 40/15 + 45/7 = 191/21
In mixed form: 92/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15+45/7 40/15+90/7 40/30+45/7 40/15+45/14 40/45+45/7 40/15+45/21 40/75+45/7 40/15+45/35 40/15+45/49