Add 42/45 and 10/42
42/45 + 10/42 is 41/35.
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,
42/45 = 42 × 14/45 × 14 = 588/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
10/42 = 10 × 15/42 × 15 = 150/630 - Add the two like fractions:
588/630 + 150/630 = 588 + 150/630 = 738/630 - 738/630 simplified gives 41/35
- So, 42/45 + 10/42 = 41/35
In mixed form: 16/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/45+10/42 42/45+20/42 42/90+10/42 42/45+10/84 42/45+30/42 42/45+50/42 42/45+70/42