Add 40/7 and 90/27
1st number: 5 5/7, 2nd number: 3 9/27
40/7 + 90/27 is 190/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
40/7 = 40 × 27/7 × 27 = 1080/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
90/27 = 90 × 7/27 × 7 = 630/189 - Add the two like fractions:
1080/189 + 630/189 = 1080 + 630/189 = 1710/189 - 1710/189 simplified gives 190/21
- So, 40/7 + 90/27 = 190/21
In mixed form: 91/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7+90/27 40/14+90/27 40/7+90/54 40/21+90/27 40/7+90/81 40/35+90/27 40/49+90/27