Add 40/15 and 18/42
1st number: 2 10/15, 2nd number: 18/42
40/15 + 18/42 is 65/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
40/15 = 40 × 14/15 × 14 = 560/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210 - Add the two like fractions:
560/210 + 90/210 = 560 + 90/210 = 650/210 - 650/210 simplified gives 65/21
- So, 40/15 + 18/42 = 65/21
In mixed form: 32/21
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