Add 42/14 and 72/4
1st number: 3 0/14, 2nd number: 18 0/4
42/14 + 72/4 is 21/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 14 × 2 = 28,
42/14 = 42 × 2/14 × 2 = 84/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
72/4 = 72 × 7/4 × 7 = 504/28 - Add the two like fractions:
84/28 + 504/28 = 84 + 504/28 = 588/28 - 588/28 simplified gives 21/1
- So, 42/14 + 72/4 = 21/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14+72/4 42/28+72/4 42/14+72/8 42/14+72/12 42/70+72/4 42/14+72/20 42/98+72/4 42/14+72/28