Add 36/30 and 90/28
1st number: 1 6/30, 2nd number: 3 6/28
36/30 + 90/28 is 309/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
36/30 = 36 × 14/30 × 14 = 504/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
90/28 = 90 × 15/28 × 15 = 1350/420 - Add the two like fractions:
504/420 + 1350/420 = 504 + 1350/420 = 1854/420 - 1854/420 simplified gives 309/70
- So, 36/30 + 90/28 = 309/70
In mixed form: 429/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+90/28 36/60+90/28 36/30+90/56 36/90+90/28 36/30+90/84