Add 75/7 and 90/8
1st number: 10 5/7, 2nd number: 11 2/8
75/7 + 90/8 is 615/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
75/7 = 75 × 8/7 × 8 = 600/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
90/8 = 90 × 7/8 × 7 = 630/56 - Add the two like fractions:
600/56 + 630/56 = 600 + 630/56 = 1230/56 - 1230/56 simplified gives 615/28
- So, 75/7 + 90/8 = 615/28
In mixed form: 2127/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/14+90/8 75/7+90/16 75/21+90/8 75/7+90/24 75/35+90/8 75/7+90/40 75/49+90/8 75/7+90/56