Add 30/45 and 90/12
1st number: 30/45, 2nd number: 7 6/12
30/45 + 90/12 is 49/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
30/45 = 30 × 4/45 × 4 = 120/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
90/12 = 90 × 15/12 × 15 = 1350/180 - Add the two like fractions:
120/180 + 1350/180 = 120 + 1350/180 = 1470/180 - 1470/180 simplified gives 49/6
- So, 30/45 + 90/12 = 49/6
In mixed form: 81/6
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