Add 30/25 and 90/28
1st number: 1 5/25, 2nd number: 3 6/28
30/25 + 90/28 is 309/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 25 × 28 = 700,
30/25 = 30 × 28/25 × 28 = 840/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
90/28 = 90 × 25/28 × 25 = 2250/700 - Add the two like fractions:
840/700 + 2250/700 = 840 + 2250/700 = 3090/700 - 3090/700 simplified gives 309/70
- So, 30/25 + 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: 60/25+90/28 30/50+90/28 30/25+90/56 90/25+90/28 30/75+90/28 30/25+90/84