Add 84/4 and 18/45
1st number: 21 0/4, 2nd number: 18/45
84/4 + 18/45 is 107/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
84/4 = 84 × 45/4 × 45 = 3780/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
18/45 = 18 × 4/45 × 4 = 72/180 - Add the two like fractions:
3780/180 + 72/180 = 3780 + 72/180 = 3852/180 - 3852/180 simplified gives 107/5
- So, 84/4 + 18/45 = 107/5
In mixed form: 212/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4+36/45 84/8+18/45 84/4+18/90 84/4+54/45 84/12+18/45 84/4+90/45 84/20+18/45 84/28+18/45