Add 72/20 and 90/16
1st number: 3 12/20, 2nd number: 5 10/16
72/20 + 90/16 is 369/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
72/20 = 72 × 4/20 × 4 = 288/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
90/16 = 90 × 5/16 × 5 = 450/80 - Add the two like fractions:
288/80 + 450/80 = 288 + 450/80 = 738/80 - 738/80 simplified gives 369/40
- So, 72/20 + 90/16 = 369/40
In mixed form: 99/40
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