Add 40/50 and 21/72
40/50 + 21/72 is 131/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 50 × 36 = 1800,
40/50 = 40 × 36/50 × 36 = 1440/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
21/72 = 21 × 25/72 × 25 = 525/1800 - Add the two like fractions:
1440/1800 + 525/1800 = 1440 + 525/1800 = 1965/1800 - 1965/1800 simplified gives 131/120
- So, 40/50 + 21/72 = 131/120
In mixed form: 111/120
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