Add 84/21 and 30/70
1st number: 4 0/21, 2nd number: 30/70
84/21 + 30/70 is 31/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
84/21 = 84 × 10/21 × 10 = 840/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Add the two like fractions:
840/210 + 90/210 = 840 + 90/210 = 930/210 - 930/210 simplified gives 31/7
- So, 84/21 + 30/70 = 31/7
In mixed form: 43/7
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