Add 80/30 and 4/42
1st number: 2 20/30, 2nd number: 4/42
80/30 + 4/42 is 58/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
4/42 = 4 × 5/42 × 5 = 20/210 - Add the two like fractions:
560/210 + 20/210 = 560 + 20/210 = 580/210 - 580/210 simplified gives 58/21
- So, 80/30 + 4/42 = 58/21
In mixed form: 216/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30+8/42 80/60+4/42 80/30+4/84 80/30+12/42 80/90+4/42 80/30+20/42 80/30+28/42