Add 7/45 and 2/42
7/45 + 2/42 is 64/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
7/45 = 7 × 14/45 × 14 = 98/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
2/42 = 2 × 15/42 × 15 = 30/630 - Add the two like fractions:
98/630 + 30/630 = 98 + 30/630 = 128/630 - 128/630 simplified gives 64/315
- So, 7/45 + 2/42 = 64/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45+2/42 7/45+4/42 7/90+2/42 7/45+2/84 21/45+2/42 7/45+6/42 35/45+2/42 7/45+10/42 49/45+2/42 7/45+14/42