Add 21/36 and 70/80
21/36 + 70/80 is 35/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
21/36 = 21 × 20/36 × 20 = 420/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Add the two like fractions:
420/720 + 630/720 = 420 + 630/720 = 1050/720 - 1050/720 simplified gives 35/24
- So, 21/36 + 70/80 = 35/24
In mixed form: 111/24
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