Add 7/40 and 84/45
1st number: 7/40, 2nd number: 1 39/45
7/40 + 84/45 is 49/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
7/40 = 7 × 9/40 × 9 = 63/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
84/45 = 84 × 8/45 × 8 = 672/360 - Add the two like fractions:
63/360 + 672/360 = 63 + 672/360 = 735/360 - 735/360 simplified gives 49/24
- So, 7/40 + 84/45 = 49/24
In mixed form: 21/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40+84/45 7/80+84/45 7/40+84/90 21/40+84/45 35/40+84/45 49/40+84/45