Add 36/90 and 7/42
36/90 + 7/42 is 17/30.
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,
36/90 = 36 × 7/90 × 7 = 252/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
7/42 = 7 × 15/42 × 15 = 105/630 - Add the two like fractions:
252/630 + 105/630 = 252 + 105/630 = 357/630 - 357/630 simplified gives 17/30
- So, 36/90 + 7/42 = 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+7/42 36/90+14/42 36/90+7/84 36/90+21/42 36/90+35/42 36/90+49/42