Add 90/72 and 5/4
1st number: 1 18/72, 2nd number: 1 1/4
90/72 + 5/4 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 4 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Likewise, for the 2nd fraction, since 4 × 18 = 72,
5/4 = 5 × 18/4 × 18 = 90/72 - Add the two like fractions:
90/72 + 90/72 = 90 + 90/72 = 180/72 - 180/72 simplified gives 5/2
- So, 90/72 + 5/4 = 5/2
In mixed form: 21/2
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