Add 45/40 and 70/35
1st number: 1 5/40, 2nd number: 2 0/35
45/40 + 70/35 is 25/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
70/35 = 70 × 8/35 × 8 = 560/280 - Add the two like fractions:
315/280 + 560/280 = 315 + 560/280 = 875/280 - 875/280 simplified gives 25/8
- So, 45/40 + 70/35 = 25/8
In mixed form: 31/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+70/35 45/80+70/35