Add 45/32 and 20/90
1st number: 1 13/32, 2nd number: 20/90
45/32 + 20/90 is 469/288.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
45/32 = 45 × 45/32 × 45 = 2025/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
20/90 = 20 × 16/90 × 16 = 320/1440 - Add the two like fractions:
2025/1440 + 320/1440 = 2025 + 320/1440 = 2345/1440 - 2345/1440 simplified gives 469/288
- So, 45/32 + 20/90 = 469/288
In mixed form: 1181/288
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/32+20/90 45/32+40/90 45/64+20/90 45/32+60/90 45/96+20/90