Add 45/15 and 7/40
1st number: 3 0/15, 2nd number: 7/40
45/15 + 7/40 is 127/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
45/15 = 45 × 8/15 × 8 = 360/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Add the two like fractions:
360/120 + 21/120 = 360 + 21/120 = 381/120 - 381/120 simplified gives 127/40
- So, 45/15 + 7/40 = 127/40
In mixed form: 37/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+7/40 45/15+14/40 45/30+7/40 45/15+7/80 45/15+21/40 45/15+35/40 45/75+7/40 45/15+49/40