Add 12/70 and 9/81
12/70 + 9/81 is 89/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
12/70 = 12 × 81/70 × 81 = 972/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
9/81 = 9 × 70/81 × 70 = 630/5670 - Add the two like fractions:
972/5670 + 630/5670 = 972 + 630/5670 = 1602/5670 - 1602/5670 simplified gives 89/315
- So, 12/70 + 9/81 = 89/315
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