Add 70/81 and 72/40
1st number: 70/81, 2nd number: 1 32/40
70/81 + 72/40 is 1079/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 40 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 81 × 40 = 3240,
70/81 = 70 × 40/81 × 40 = 2800/3240 - Likewise, for the 2nd fraction, since 40 × 81 = 3240,
72/40 = 72 × 81/40 × 81 = 5832/3240 - Add the two like fractions:
2800/3240 + 5832/3240 = 2800 + 5832/3240 = 8632/3240 - 8632/3240 simplified gives 1079/405
- So, 70/81 + 72/40 = 1079/405
In mixed form: 2269/405
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