Add 42/63 and 21/35
42/63 + 21/35 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
21/35 = 21 × 9/35 × 9 = 189/315 - Add the two like fractions:
210/315 + 189/315 = 210 + 189/315 = 399/315 - 399/315 simplified gives 19/15
- So, 42/63 + 21/35 = 19/15
In mixed form: 14/15
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