Add 40/15 and 9/7
1st number: 2 10/15, 2nd number: 1 2/7
40/15 + 9/7 is 83/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
40/15 = 40 × 7/15 × 7 = 280/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
9/7 = 9 × 15/7 × 15 = 135/105 - Add the two like fractions:
280/105 + 135/105 = 280 + 135/105 = 415/105 - 415/105 simplified gives 83/21
- So, 40/15 + 9/7 = 83/21
In mixed form: 320/21
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