Add 21/40 and 9/75
21/40 + 9/75 is 129/200.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 40 × 15 = 600,
21/40 = 21 × 15/40 × 15 = 315/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
9/75 = 9 × 8/75 × 8 = 72/600 - Add the two like fractions:
315/600 + 72/600 = 315 + 72/600 = 387/600 - 387/600 simplified gives 129/200
- So, 21/40 + 9/75 = 129/200
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