Add 70/7 and 72/20
1st number: 10 0/7, 2nd number: 3 12/20
70/7 + 72/20 is 68/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
70/7 = 70 × 20/7 × 20 = 1400/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Add the two like fractions:
1400/140 + 504/140 = 1400 + 504/140 = 1904/140 - 1904/140 simplified gives 68/5
- So, 70/7 + 72/20 = 68/5
In mixed form: 133/5
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