Add 90/72 and 4/70
1st number: 1 18/72, 2nd number: 4/70
90/72 + 4/70 is 183/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
90/72 = 90 × 35/72 × 35 = 3150/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
4/70 = 4 × 36/70 × 36 = 144/2520 - Add the two like fractions:
3150/2520 + 144/2520 = 3150 + 144/2520 = 3294/2520 - 3294/2520 simplified gives 183/140
- So, 90/72 + 4/70 = 183/140
In mixed form: 143/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+8/70 90/72+12/70 90/72+20/70 90/72+28/70