Add 70/80 and 18/15
1st number: 70/80, 2nd number: 1 3/15
70/80 + 18/15 is 83/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
70/80 = 70 × 3/80 × 3 = 210/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
18/15 = 18 × 16/15 × 16 = 288/240 - Add the two like fractions:
210/240 + 288/240 = 210 + 288/240 = 498/240 - 498/240 simplified gives 83/40
- So, 70/80 + 18/15 = 83/40
In mixed form: 23/40
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