Add 7/20 and 70/42
1st number: 7/20, 2nd number: 1 28/42
7/20 + 70/42 is 121/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
7/20 = 7 × 21/20 × 21 = 147/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
70/42 = 70 × 10/42 × 10 = 700/420 - Add the two like fractions:
147/420 + 700/420 = 147 + 700/420 = 847/420 - 847/420 simplified gives 121/60
- So, 7/20 + 70/42 = 121/60
In mixed form: 21/60
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