Add 75/15 and 40/21
1st number: 5 0/15, 2nd number: 1 19/21
75/15 + 40/21 is 145/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
75/15 = 75 × 7/15 × 7 = 525/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
40/21 = 40 × 5/21 × 5 = 200/105 - Add the two like fractions:
525/105 + 200/105 = 525 + 200/105 = 725/105 - 725/105 simplified gives 145/21
- So, 75/15 + 40/21 = 145/21
In mixed form: 619/21
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