Add 42/7 and 30/90
1st number: 6 0/7, 2nd number: 30/90
42/7 + 30/90 is 19/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
42/7 = 42 × 90/7 × 90 = 3780/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
30/90 = 30 × 7/90 × 7 = 210/630 - Add the two like fractions:
3780/630 + 210/630 = 3780 + 210/630 = 3990/630 - 3990/630 simplified gives 19/3
- So, 42/7 + 30/90 = 19/3
In mixed form: 61/3
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