Add 5/42 and 20/90
5/42 + 20/90 is 43/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
5/42 = 5 × 15/42 × 15 = 75/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
75/630 + 140/630 = 75 + 140/630 = 215/630 - 215/630 simplified gives 43/126
- So, 5/42 + 20/90 = 43/126
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