Add 70/20 and 90/15
1st number: 3 10/20, 2nd number: 6 0/15
70/20 + 90/15 is 19/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
70/20 = 70 × 3/20 × 3 = 210/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
90/15 = 90 × 4/15 × 4 = 360/60 - Add the two like fractions:
210/60 + 360/60 = 210 + 360/60 = 570/60 - 570/60 simplified gives 19/2
- So, 70/20 + 90/15 = 19/2
In mixed form: 91/2
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