Add 8/42 and 20/45
8/42 + 20/45 is 40/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
8/42 = 8 × 15/42 × 15 = 120/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
20/45 = 20 × 14/45 × 14 = 280/630 - Add the two like fractions:
120/630 + 280/630 = 120 + 280/630 = 400/630 - 400/630 simplified gives 40/63
- So, 8/42 + 20/45 = 40/63
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