Add 75/70 and 84/21
1st number: 1 5/70, 2nd number: 4 0/21
75/70 + 84/21 is 71/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
75/70 = 75 × 3/70 × 3 = 225/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
84/21 = 84 × 10/21 × 10 = 840/210 - Add the two like fractions:
225/210 + 840/210 = 225 + 840/210 = 1065/210 - 1065/210 simplified gives 71/14
- So, 75/70 + 84/21 = 71/14
In mixed form: 51/14
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