Add 18/45 and 42/7
1st number: 18/45, 2nd number: 6 0/7
18/45 + 42/7 is 32/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
18/45 = 18 × 7/45 × 7 = 126/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
42/7 = 42 × 45/7 × 45 = 1890/315 - Add the two like fractions:
126/315 + 1890/315 = 126 + 1890/315 = 2016/315 - 2016/315 simplified gives 32/5
- So, 18/45 + 42/7 = 32/5
In mixed form: 62/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45+42/7 18/45+84/7 18/90+42/7 18/45+42/14 54/45+42/7 18/45+42/21 90/45+42/7 18/45+42/35 18/45+42/49