Add 20/70 and 15/18
20/70 + 15/18 is 47/42.
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,
20/70 = 20 × 9/70 × 9 = 180/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
15/18 = 15 × 35/18 × 35 = 525/630 - Add the two like fractions:
180/630 + 525/630 = 180 + 525/630 = 705/630 - 705/630 simplified gives 47/42
- So, 20/70 + 15/18 = 47/42
In mixed form: 15/42
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