Add 45/28 and 90/60
1st number: 1 17/28, 2nd number: 1 30/60
45/28 + 90/60 is 87/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
45/28 = 45 × 15/28 × 15 = 675/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Add the two like fractions:
675/420 + 630/420 = 675 + 630/420 = 1305/420 - 1305/420 simplified gives 87/28
- So, 45/28 + 90/60 = 87/28
In mixed form: 33/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+90/60 45/56+90/60 45/84+90/60