Add 90/60 and 70/28
1st number: 1 30/60, 2nd number: 2 14/28
90/60 + 70/28 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
90/60 = 90 × 7/60 × 7 = 630/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
70/28 = 70 × 15/28 × 15 = 1050/420 - Add the two like fractions:
630/420 + 1050/420 = 630 + 1050/420 = 1680/420 - 1680/420 simplified gives 4/1
- So, 90/60 + 70/28 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60+70/56 90/60+70/84