Add 30/15 and 90/18
1st number: 2 0/15, 2nd number: 5 0/18
30/15 + 90/18 is 7/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
30/15 = 30 × 6/15 × 6 = 180/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Add the two like fractions:
180/90 + 450/90 = 180 + 450/90 = 630/90 - 630/90 simplified gives 7/1
- So, 30/15 + 90/18 = 7/1
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