Add 90/80 and 72/20
1st number: 1 10/80, 2nd number: 3 12/20
90/80 + 72/20 is 189/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 20 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Likewise, for the 2nd fraction, since 20 × 4 = 80,
72/20 = 72 × 4/20 × 4 = 288/80 - Add the two like fractions:
90/80 + 288/80 = 90 + 288/80 = 378/80 - 378/80 simplified gives 189/40
- So, 90/80 + 72/20 = 189/40
In mixed form: 429/40
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