Add 40/42 and 84/15
1st number: 40/42, 2nd number: 5 9/15
40/42 + 84/15 is 688/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
40/42 = 40 × 5/42 × 5 = 200/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
84/15 = 84 × 14/15 × 14 = 1176/210 - Add the two like fractions:
200/210 + 1176/210 = 200 + 1176/210 = 1376/210 - 1376/210 simplified gives 688/105
- So, 40/42 + 84/15 = 688/105
In mixed form: 658/105
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