Add 7/40 and 45/15
1st number: 7/40, 2nd number: 3 0/15
7/40 + 45/15 is 127/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
45/15 = 45 × 8/15 × 8 = 360/120 - Add the two like fractions:
21/120 + 360/120 = 21 + 360/120 = 381/120 - 381/120 simplified gives 127/40
- So, 7/40 + 45/15 = 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: 14/40+45/15 7/40+90/15 7/80+45/15 7/40+45/30 21/40+45/15 35/40+45/15 7/40+45/75 49/40+45/15