Add 90/35 and 7/42
1st number: 2 20/35, 2nd number: 7/42
90/35 + 7/42 is 115/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
90/35 = 90 × 6/35 × 6 = 540/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Add the two like fractions:
540/210 + 35/210 = 540 + 35/210 = 575/210 - 575/210 simplified gives 115/42
- So, 90/35 + 7/42 = 115/42
In mixed form: 231/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35+14/42 90/70+7/42 90/35+7/84 90/35+21/42 90/35+35/42 90/35+49/42