Add 42/70 and 18/63
42/70 + 18/63 is 31/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
42/70 = 42 × 9/70 × 9 = 378/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
18/63 = 18 × 10/63 × 10 = 180/630 - Add the two like fractions:
378/630 + 180/630 = 378 + 180/630 = 558/630 - 558/630 simplified gives 31/35
- So, 42/70 + 18/63 = 31/35
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