Add 75/7 and 18/20
1st number: 10 5/7, 2nd number: 18/20
75/7 + 18/20 is 813/70.
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,
75/7 = 75 × 20/7 × 20 = 1500/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Add the two like fractions:
1500/140 + 126/140 = 1500 + 126/140 = 1626/140 - 1626/140 simplified gives 813/70
- So, 75/7 + 18/20 = 813/70
In mixed form: 1143/70
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