Add 1/90 and 1/42
1/90 + 1/42 is 11/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
1/90 = 1 × 7/90 × 7 = 7/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
1/42 = 1 × 15/42 × 15 = 15/630 - Add the two like fractions:
7/630 + 15/630 = 7 + 15/630 = 22/630 - 22/630 simplified gives 11/315
- So, 1/90 + 1/42 = 11/315
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