Add 21/40 and 16/63
21/40 + 16/63 is 1963/2520.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
21/40 = 21 × 63/40 × 63 = 1323/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
16/63 = 16 × 40/63 × 40 = 640/2520 - Add the two like fractions:
1323/2520 + 640/2520 = 1323 + 640/2520 = 1963/2520 - So, 21/40 + 16/63 = 1963/2520
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