Add 42/56 and 24/90
42/56 + 24/90 is 61/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
42/56 = 42 × 45/56 × 45 = 1890/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
24/90 = 24 × 28/90 × 28 = 672/2520 - Add the two like fractions:
1890/2520 + 672/2520 = 1890 + 672/2520 = 2562/2520 - 2562/2520 simplified gives 61/60
- So, 42/56 + 24/90 = 61/60
In mixed form: 11/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+24/90 42/56+48/90 42/56+72/90