Add 7/84 and 90/75
1st number: 7/84, 2nd number: 1 15/75
7/84 + 90/75 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 75 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
7/84 = 7 × 25/84 × 25 = 175/2100 - Likewise, for the 2nd fraction, since 75 × 28 = 2100,
90/75 = 90 × 28/75 × 28 = 2520/2100 - Add the two like fractions:
175/2100 + 2520/2100 = 175 + 2520/2100 = 2695/2100 - 2695/2100 simplified gives 77/60
- So, 7/84 + 90/75 = 77/60
In mixed form: 117/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84+90/75 21/84+90/75 35/84+90/75 49/84+90/75