Add 15/70 and 3/18
15/70 + 3/18 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
3/18 = 3 × 35/18 × 35 = 105/630 - Add the two like fractions:
135/630 + 105/630 = 135 + 105/630 = 240/630 - 240/630 simplified gives 8/21
- So, 15/70 + 3/18 = 8/21
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