Add 21/56 and 45/75
21/56 + 45/75 is 39/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 75 is 4200
Next, find the equivalent fraction of both fractional numbers with denominator 4200 - For the 1st fraction, since 56 × 75 = 4200,
21/56 = 21 × 75/56 × 75 = 1575/4200 - Likewise, for the 2nd fraction, since 75 × 56 = 4200,
45/75 = 45 × 56/75 × 56 = 2520/4200 - Add the two like fractions:
1575/4200 + 2520/4200 = 1575 + 2520/4200 = 4095/4200 - 4095/4200 simplified gives 39/40
- So, 21/56 + 45/75 = 39/40
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