Add 15/35 and 42/63
15/35 + 42/63 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
15/35 = 15 × 9/35 × 9 = 135/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315 - Add the two like fractions:
135/315 + 210/315 = 135 + 210/315 = 345/315 - 345/315 simplified gives 23/21
- So, 15/35 + 42/63 = 23/21
In mixed form: 12/21
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