Add 45/42 and 4/72
1st number: 1 3/42, 2nd number: 4/72
45/42 + 4/72 is 71/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
45/42 = 45 × 12/42 × 12 = 540/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Add the two like fractions:
540/504 + 28/504 = 540 + 28/504 = 568/504 - 568/504 simplified gives 71/63
- So, 45/42 + 4/72 = 71/63
In mixed form: 18/63
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