Add 84/12 and 21/70
1st number: 7 0/12, 2nd number: 21/70
84/12 + 21/70 is 73/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
84/12 = 84 × 35/12 × 35 = 2940/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
21/70 = 21 × 6/70 × 6 = 126/420 - Add the two like fractions:
2940/420 + 126/420 = 2940 + 126/420 = 3066/420 - 3066/420 simplified gives 73/10
- So, 84/12 + 21/70 = 73/10
In mixed form: 73/10
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