Add 15/70 and 12/42
15/70 + 12/42 is 1/2.
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,
12/42 = 12 × 5/42 × 5 = 60/210 - Add the two like fractions:
45/210 + 60/210 = 45 + 60/210 = 105/210 - 105/210 simplified gives 1/2
- So, 15/70 + 12/42 = 1/2
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