Add 90/5 and 45/12
1st number: 18 0/5, 2nd number: 3 9/12
90/5 + 45/12 is 87/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
90/5 = 90 × 12/5 × 12 = 1080/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
45/12 = 45 × 5/12 × 5 = 225/60 - Add the two like fractions:
1080/60 + 225/60 = 1080 + 225/60 = 1305/60 - 1305/60 simplified gives 87/4
- So, 90/5 + 45/12 = 87/4
In mixed form: 213/4
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