Add 36/21 and 90/18
1st number: 1 15/21, 2nd number: 5 0/18
36/21 + 90/18 is 47/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
36/21 = 36 × 6/21 × 6 = 216/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
90/18 = 90 × 7/18 × 7 = 630/126 - Add the two like fractions:
216/126 + 630/126 = 216 + 630/126 = 846/126 - 846/126 simplified gives 47/7
- So, 36/21 + 90/18 = 47/7
In mixed form: 65/7
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