Add 5/70 and 15/45
5/70 + 15/45 is 17/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
5/70 = 5 × 9/70 × 9 = 45/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
15/45 = 15 × 14/45 × 14 = 210/630 - Add the two like fractions:
45/630 + 210/630 = 45 + 210/630 = 255/630 - 255/630 simplified gives 17/42
- So, 5/70 + 15/45 = 17/42
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