Add 16/90 and 9/40
16/90 + 9/40 is 29/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
16/90 = 16 × 4/90 × 4 = 64/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Add the two like fractions:
64/360 + 81/360 = 64 + 81/360 = 145/360 - 145/360 simplified gives 29/72
- So, 16/90 + 9/40 = 29/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/90+9/40 16/90+18/40 16/90+9/80 48/90+9/40 16/90+27/40 80/90+9/40 16/90+45/40 16/90+63/40