Add 21/72 and 3/5
21/72 + 3/5 is 107/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
3/5 = 3 × 72/5 × 72 = 216/360 - Add the two like fractions:
105/360 + 216/360 = 105 + 216/360 = 321/360 - 321/360 simplified gives 107/120
- So, 21/72 + 3/5 = 107/120
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