Add 4/30 and 4/70
4/30 + 4/70 is 4/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
4/30 = 4 × 7/30 × 7 = 28/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
4/70 = 4 × 3/70 × 3 = 12/210 - Add the two like fractions:
28/210 + 12/210 = 28 + 12/210 = 40/210 - 40/210 simplified gives 4/21
- So, 4/30 + 4/70 = 4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30+4/70 4/30+8/70 4/60+4/70 12/30+4/70 4/30+12/70 4/90+4/70 20/30+4/70 4/30+20/70 28/30+4/70 4/30+28/70