Add 90/21 and 1/27
1st number: 4 6/21, 2nd number: 1/27
90/21 + 1/27 is 817/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
90/21 = 90 × 9/21 × 9 = 810/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
1/27 = 1 × 7/27 × 7 = 7/189 - Add the two like fractions:
810/189 + 7/189 = 810 + 7/189 = 817/189 - So, 90/21 + 1/27 = 817/189
In mixed form: 461/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+2/27 90/42+1/27 90/21+1/54 90/21+3/27 90/63+1/27 90/21+1/81 90/21+5/27 90/21+7/27