Add 27/90 and 12/7
1st number: 27/90, 2nd number: 1 5/7
27/90 + 12/7 is 141/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
12/7 = 12 × 90/7 × 90 = 1080/630 - Add the two like fractions:
189/630 + 1080/630 = 189 + 1080/630 = 1269/630 - 1269/630 simplified gives 141/70
- So, 27/90 + 12/7 = 141/70
In mixed form: 21/70
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