Add 7/70 and 15/90
7/70 + 15/90 is 4/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
7/70 = 7 × 9/70 × 9 = 63/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Add the two like fractions:
63/630 + 105/630 = 63 + 105/630 = 168/630 - 168/630 simplified gives 4/15
- So, 7/70 + 15/90 = 4/15
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