Add 6/90 and 40/42
6/90 + 40/42 is 107/105.
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,
6/90 = 6 × 7/90 × 7 = 42/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
40/42 = 40 × 15/42 × 15 = 600/630 - Add the two like fractions:
42/630 + 600/630 = 42 + 600/630 = 642/630 - 642/630 simplified gives 107/105
- So, 6/90 + 40/42 = 107/105
In mixed form: 12/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/90+40/42 6/90+80/42 6/90+40/84 18/90+40/42 30/90+40/42 42/90+40/42