Add 7/90 and 84/42
1st number: 7/90, 2nd number: 2 0/42
7/90 + 84/42 is 187/90.
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,
7/90 = 7 × 7/90 × 7 = 49/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
84/42 = 84 × 15/42 × 15 = 1260/630 - Add the two like fractions:
49/630 + 1260/630 = 49 + 1260/630 = 1309/630 - 1309/630 simplified gives 187/90
- So, 7/90 + 84/42 = 187/90
In mixed form: 27/90
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