Add 7/30 and 12/84
7/30 + 12/84 is 79/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
7/30 = 7 × 14/30 × 14 = 98/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Add the two like fractions:
98/420 + 60/420 = 98 + 60/420 = 158/420 - 158/420 simplified gives 79/210
- So, 7/30 + 12/84 = 79/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+12/84 7/30+24/84 7/60+12/84 21/30+12/84 7/30+36/84 7/90+12/84 35/30+12/84 7/30+60/84 49/30+12/84