Add 42/63 and 21/80
42/63 + 21/80 is 223/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
42/63 = 42 × 80/63 × 80 = 3360/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
21/80 = 21 × 63/80 × 63 = 1323/5040 - Add the two like fractions:
3360/5040 + 1323/5040 = 3360 + 1323/5040 = 4683/5040 - 4683/5040 simplified gives 223/240
- So, 42/63 + 21/80 = 223/240
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