Add 90/35 and 42/72
1st number: 2 20/35, 2nd number: 42/72
90/35 + 42/72 is 265/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 35 × 72 = 2520,
90/35 = 90 × 72/35 × 72 = 6480/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
42/72 = 42 × 35/72 × 35 = 1470/2520 - Add the two like fractions:
6480/2520 + 1470/2520 = 6480 + 1470/2520 = 7950/2520 - 7950/2520 simplified gives 265/84
- So, 90/35 + 42/72 = 265/84
In mixed form: 313/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35+84/72 90/70+42/72