Add 42/15 and 72/63
1st number: 2 12/15, 2nd number: 1 9/63
42/15 + 72/63 is 138/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
42/15 = 42 × 21/15 × 21 = 882/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
72/63 = 72 × 5/63 × 5 = 360/315 - Add the two like fractions:
882/315 + 360/315 = 882 + 360/315 = 1242/315 - 1242/315 simplified gives 138/35
- So, 42/15 + 72/63 = 138/35
In mixed form: 333/35
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