Add 1/42 and 72/90
1/42 + 72/90 is 173/210.
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,
1/42 = 1 × 15/42 × 15 = 15/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
72/90 = 72 × 7/90 × 7 = 504/630 - Add the two like fractions:
15/630 + 504/630 = 15 + 504/630 = 519/630 - 519/630 simplified gives 173/210
- So, 1/42 + 72/90 = 173/210
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