Add 72/80 and 35/70
72/80 + 35/70 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
72/80 = 72 × 7/80 × 7 = 504/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
35/70 = 35 × 8/70 × 8 = 280/560 - Add the two like fractions:
504/560 + 280/560 = 504 + 280/560 = 784/560 - 784/560 simplified gives 7/5
- So, 72/80 + 35/70 = 7/5
In mixed form: 12/5
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