Add 1/84 and 70/40
1st number: 1/84, 2nd number: 1 30/40
1/84 + 70/40 is 37/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
1/84 = 1 × 10/84 × 10 = 10/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
70/40 = 70 × 21/40 × 21 = 1470/840 - Add the two like fractions:
10/840 + 1470/840 = 10 + 1470/840 = 1480/840 - 1480/840 simplified gives 37/21
- So, 1/84 + 70/40 = 37/21
In mixed form: 116/21
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