Add 25/18 and 70/21
1st number: 1 7/18, 2nd number: 3 7/21
25/18 + 70/21 is 85/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
25/18 = 25 × 7/18 × 7 = 175/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
70/21 = 70 × 6/21 × 6 = 420/126 - Add the two like fractions:
175/126 + 420/126 = 175 + 420/126 = 595/126 - 595/126 simplified gives 85/18
- So, 25/18 + 70/21 = 85/18
In mixed form: 413/18
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