Add 90/42 and 18/72
1st number: 2 6/42, 2nd number: 18/72
90/42 + 18/72 is 67/28.
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,
90/42 = 90 × 12/42 × 12 = 1080/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Add the two like fractions:
1080/504 + 126/504 = 1080 + 126/504 = 1206/504 - 1206/504 simplified gives 67/28
- So, 90/42 + 18/72 = 67/28
In mixed form: 211/28
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