Add 4/42 and 7/45
4/42 + 7/45 is 79/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
4/42 = 4 × 15/42 × 15 = 60/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
7/45 = 7 × 14/45 × 14 = 98/630 - Add the two like fractions:
60/630 + 98/630 = 60 + 98/630 = 158/630 - 158/630 simplified gives 79/315
- So, 4/42 + 7/45 = 79/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42+7/45 4/42+14/45 4/84+7/45 4/42+7/90 12/42+7/45 4/42+21/45 20/42+7/45 4/42+35/45 28/42+7/45 4/42+49/45