Add 45/42 and 72/45
1st number: 1 3/42, 2nd number: 1 27/45
45/42 + 72/45 is 187/70.
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,
45/42 = 45 × 15/42 × 15 = 675/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
72/45 = 72 × 14/45 × 14 = 1008/630 - Add the two like fractions:
675/630 + 1008/630 = 675 + 1008/630 = 1683/630 - 1683/630 simplified gives 187/70
- So, 45/42 + 72/45 = 187/70
In mixed form: 247/70
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