Add 3/90 and 1/42
3/90 + 1/42 is 2/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
1/42 = 1 × 15/42 × 15 = 15/630 - Add the two like fractions:
21/630 + 15/630 = 21 + 15/630 = 36/630 - 36/630 simplified gives 2/35
- So, 3/90 + 1/42 = 2/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+1/42 3/90+2/42 3/90+1/84 9/90+1/42 3/90+3/42 15/90+1/42 3/90+5/42 21/90+1/42 3/90+7/42