Add 21/70 and 54/42
1st number: 21/70, 2nd number: 1 12/42
21/70 + 54/42 is 111/70.
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,
21/70 = 21 × 3/70 × 3 = 63/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
54/42 = 54 × 5/42 × 5 = 270/210 - Add the two like fractions:
63/210 + 270/210 = 63 + 270/210 = 333/210 - 333/210 simplified gives 111/70
- So, 21/70 + 54/42 = 111/70
In mixed form: 141/70
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