Add 30/42 and 72/45
1st number: 30/42, 2nd number: 1 27/45
30/42 + 72/45 is 81/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
30/42 = 30 × 15/42 × 15 = 450/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
72/45 = 72 × 14/45 × 14 = 1008/630 - Add the two like fractions:
450/630 + 1008/630 = 450 + 1008/630 = 1458/630 - 1458/630 simplified gives 81/35
- So, 30/42 + 72/45 = 81/35
In mixed form: 211/35
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