Add 42/28 and 90/72
1st number: 1 14/28, 2nd number: 1 18/72
42/28 + 90/72 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
42/28 = 42 × 18/28 × 18 = 756/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
90/72 = 90 × 7/72 × 7 = 630/504 - Add the two like fractions:
756/504 + 630/504 = 756 + 630/504 = 1386/504 - 1386/504 simplified gives 11/4
- So, 42/28 + 90/72 = 11/4
In mixed form: 23/4
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