Add 90/48 and 50/21
1st number: 1 42/48, 2nd number: 2 8/21
90/48 + 50/21 is 715/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 48 × 7 = 336,
90/48 = 90 × 7/48 × 7 = 630/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
50/21 = 50 × 16/21 × 16 = 800/336 - Add the two like fractions:
630/336 + 800/336 = 630 + 800/336 = 1430/336 - 1430/336 simplified gives 715/168
- So, 90/48 + 50/21 = 715/168
In mixed form: 443/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/96+50/21 90/48+50/42 90/48+50/63