Add 21/70 and 75/42
1st number: 21/70, 2nd number: 1 33/42
21/70 + 75/42 is 73/35.
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,
75/42 = 75 × 5/42 × 5 = 375/210 - Add the two like fractions:
63/210 + 375/210 = 63 + 375/210 = 438/210 - 438/210 simplified gives 73/35
- So, 21/70 + 75/42 = 73/35
In mixed form: 23/35
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