Add 42/28 and 18/16
1st number: 1 14/28, 2nd number: 1 2/16
42/28 + 18/16 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 28 × 4 = 112,
42/28 = 42 × 4/28 × 4 = 168/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
18/16 = 18 × 7/16 × 7 = 126/112 - Add the two like fractions:
168/112 + 126/112 = 168 + 126/112 = 294/112 - 294/112 simplified gives 21/8
- So, 42/28 + 18/16 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28+18/16 42/28+36/16 42/56+18/16 42/28+18/32 42/28+54/16 42/84+18/16 42/28+18/48 42/28+90/16 42/28+18/80