Add 8/40 and 98/42
1st number: 8/40, 2nd number: 2 14/42
8/40 + 98/42 is 38/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
8/40 = 8 × 21/40 × 21 = 168/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
98/42 = 98 × 20/42 × 20 = 1960/840 - Add the two like fractions:
168/840 + 1960/840 = 168 + 1960/840 = 2128/840 - 2128/840 simplified gives 38/15
- So, 8/40 + 98/42 = 38/15
In mixed form: 28/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40+98/42 8/80+98/42 8/40+98/84 24/40+98/42 56/40+98/42