Add 72/90 and 20/32
72/90 + 20/32 is 57/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 32 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 90 × 16 = 1440,
72/90 = 72 × 16/90 × 16 = 1152/1440 - Likewise, for the 2nd fraction, since 32 × 45 = 1440,
20/32 = 20 × 45/32 × 45 = 900/1440 - Add the two like fractions:
1152/1440 + 900/1440 = 1152 + 900/1440 = 2052/1440 - 2052/1440 simplified gives 57/40
- So, 72/90 + 20/32 = 57/40
In mixed form: 117/40
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