Add 12/40 and 21/72
12/40 + 21/72 is 71/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
108/360 + 105/360 = 108 + 105/360 = 213/360 - 213/360 simplified gives 71/120
- So, 12/40 + 21/72 = 71/120
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