Add 42/70 and 27/90
42/70 + 27/90 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 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 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630 - Add the two like fractions:
378/630 + 189/630 = 378 + 189/630 = 567/630 - 567/630 simplified gives 9/10
- So, 42/70 + 27/90 = 9/10
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