Add 84/4 and 54/70
1st number: 21 0/4, 2nd number: 54/70
84/4 + 54/70 is 762/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
84/4 = 84 × 35/4 × 35 = 2940/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
54/70 = 54 × 2/70 × 2 = 108/140 - Add the two like fractions:
2940/140 + 108/140 = 2940 + 108/140 = 3048/140 - 3048/140 simplified gives 762/35
- So, 84/4 + 54/70 = 762/35
In mixed form: 2127/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/8+54/70 84/12+54/70 84/20+54/70 84/28+54/70