Add 30/18 and 90/72
1st number: 1 12/18, 2nd number: 1 18/72
30/18 + 90/72 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
30/18 = 30 × 4/18 × 4 = 120/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Add the two like fractions:
120/72 + 90/72 = 120 + 90/72 = 210/72 - 210/72 simplified gives 35/12
- So, 30/18 + 90/72 = 35/12
In mixed form: 211/12
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