Add 18/21 and 90/48
1st number: 18/21, 2nd number: 1 42/48
18/21 + 90/48 is 153/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
18/21 = 18 × 16/21 × 16 = 288/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
90/48 = 90 × 7/48 × 7 = 630/336 - Add the two like fractions:
288/336 + 630/336 = 288 + 630/336 = 918/336 - 918/336 simplified gives 153/56
- So, 18/21 + 90/48 = 153/56
In mixed form: 241/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+90/48 18/42+90/48 18/21+90/96 54/21+90/48 18/63+90/48 90/21+90/48