Add 90/40 and 1/28
1st number: 2 10/40, 2nd number: 1/28
90/40 + 1/28 is 16/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
1/28 = 1 × 10/28 × 10 = 10/280 - Add the two like fractions:
630/280 + 10/280 = 630 + 10/280 = 640/280 - 640/280 simplified gives 16/7
- So, 90/40 + 1/28 = 16/7
In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+2/28 90/80+1/28 90/40+1/56 90/40+3/28 90/40+1/84 90/40+5/28 90/40+7/28