Add 81/30 and 70/80
1st number: 2 21/30, 2nd number: 70/80
81/30 + 70/80 is 143/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
81/30 = 81 × 8/30 × 8 = 648/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
70/80 = 70 × 3/80 × 3 = 210/240 - Add the two like fractions:
648/240 + 210/240 = 648 + 210/240 = 858/240 - 858/240 simplified gives 143/40
- So, 81/30 + 70/80 = 143/40
In mixed form: 323/40
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