Add 90/70 and 4/6
1st number: 1 20/70, 2nd number: 4/6
90/70 + 4/6 is 41/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
4/6 = 4 × 35/6 × 35 = 140/210 - Add the two like fractions:
270/210 + 140/210 = 270 + 140/210 = 410/210 - 410/210 simplified gives 41/21
- So, 90/70 + 4/6 = 41/21
In mixed form: 120/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+8/6 90/70+4/12 90/70+12/6 90/70+4/18 90/70+20/6 90/70+4/30 90/70+28/6 90/70+4/42