Add 84/7 and 18/40
1st number: 12 0/7, 2nd number: 18/40
84/7 + 18/40 is 249/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
84/7 = 84 × 40/7 × 40 = 3360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Add the two like fractions:
3360/280 + 126/280 = 3360 + 126/280 = 3486/280 - 3486/280 simplified gives 249/20
- So, 84/7 + 18/40 = 249/20
In mixed form: 129/20
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