Add 60/21 and 90/18
1st number: 2 18/21, 2nd number: 5 0/18
60/21 + 90/18 is 55/7.
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,
60/21 = 60 × 6/21 × 6 = 360/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
90/18 = 90 × 7/18 × 7 = 630/126 - Add the two like fractions:
360/126 + 630/126 = 360 + 630/126 = 990/126 - 990/126 simplified gives 55/7
- So, 60/21 + 90/18 = 55/7
In mixed form: 76/7
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