Add 4/90 and 72/42
1st number: 4/90, 2nd number: 1 30/42
4/90 + 72/42 is 554/315.
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,
4/90 = 4 × 7/90 × 7 = 28/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
72/42 = 72 × 15/42 × 15 = 1080/630 - Add the two like fractions:
28/630 + 1080/630 = 28 + 1080/630 = 1108/630 - 1108/630 simplified gives 554/315
- So, 4/90 + 72/42 = 554/315
In mixed form: 1239/315
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