Add 54/15 and 42/70
1st number: 3 9/15, 2nd number: 42/70
54/15 + 42/70 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
54/15 = 54 × 14/15 × 14 = 756/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
42/70 = 42 × 3/70 × 3 = 126/210 - Add the two like fractions:
756/210 + 126/210 = 756 + 126/210 = 882/210 - 882/210 simplified gives 21/5
- So, 54/15 + 42/70 = 21/5
In mixed form: 41/5
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