Add 18/30 and 9/8
1st number: 18/30, 2nd number: 1 1/8
18/30 + 9/8 is 69/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
18/30 = 18 × 4/30 × 4 = 72/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
9/8 = 9 × 15/8 × 15 = 135/120 - Add the two like fractions:
72/120 + 135/120 = 72 + 135/120 = 207/120 - 207/120 simplified gives 69/40
- So, 18/30 + 9/8 = 69/40
In mixed form: 129/40
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