Add 42/54 and 90/72
1st number: 42/54, 2nd number: 1 18/72
42/54 + 90/72 is 73/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 72 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
42/54 = 42 × 4/54 × 4 = 168/216 - Likewise, for the 2nd fraction, since 72 × 3 = 216,
90/72 = 90 × 3/72 × 3 = 270/216 - Add the two like fractions:
168/216 + 270/216 = 168 + 270/216 = 438/216 - 438/216 simplified gives 73/36
- So, 42/54 + 90/72 = 73/36
In mixed form: 21/36
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