Add 70/80 and 20/72
70/80 + 20/72 is 83/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
20/72 = 20 × 10/72 × 10 = 200/720 - Add the two like fractions:
630/720 + 200/720 = 630 + 200/720 = 830/720 - 830/720 simplified gives 83/72
- So, 70/80 + 20/72 = 83/72
In mixed form: 111/72
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