Add 15/70 and 84/42
1st number: 15/70, 2nd number: 2 0/42
15/70 + 84/42 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
84/42 = 84 × 5/42 × 5 = 420/210 - Add the two like fractions:
45/210 + 420/210 = 45 + 420/210 = 465/210 - 465/210 simplified gives 31/14
- So, 15/70 + 84/42 = 31/14
In mixed form: 23/14
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