Add 4/5 and 21/72
4/5 + 21/72 is 131/120.
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,
4/5 = 4 × 72/5 × 72 = 288/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
288/360 + 105/360 = 288 + 105/360 = 393/360 - 393/360 simplified gives 131/120
- So, 4/5 + 21/72 = 131/120
In mixed form: 111/120
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