Add 60/70 and 21/42
60/70 + 21/42 is 19/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
60/70 = 60 × 3/70 × 3 = 180/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Add the two like fractions:
180/210 + 105/210 = 180 + 105/210 = 285/210 - 285/210 simplified gives 19/14
- So, 60/70 + 21/42 = 19/14
In mixed form: 15/14
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