Add 64/70 and 15/90
64/70 + 15/90 is 227/210.
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,
64/70 = 64 × 9/70 × 9 = 576/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Add the two like fractions:
576/630 + 105/630 = 576 + 105/630 = 681/630 - 681/630 simplified gives 227/210
- So, 64/70 + 15/90 = 227/210
In mixed form: 117/210
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