Add 21/18 and 70/42
1st number: 1 3/18, 2nd number: 1 28/42
21/18 + 70/42 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
70/42 = 70 × 3/42 × 3 = 210/126 - Add the two like fractions:
147/126 + 210/126 = 147 + 210/126 = 357/126 - 357/126 simplified gives 17/6
- So, 21/18 + 70/42 = 17/6
In mixed form: 25/6
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