Add 90/5 and 21/72
1st number: 18 0/5, 2nd number: 21/72
90/5 + 21/72 is 439/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
90/5 = 90 × 72/5 × 72 = 6480/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
6480/360 + 105/360 = 6480 + 105/360 = 6585/360 - 6585/360 simplified gives 439/24
- So, 90/5 + 21/72 = 439/24
In mixed form: 187/24
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