Add 4/7 and 18/20
4/7 + 18/20 is 103/70.
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,
4/7 = 4 × 20/7 × 20 = 80/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Add the two like fractions:
80/140 + 126/140 = 80 + 126/140 = 206/140 - 206/140 simplified gives 103/70
- So, 4/7 + 18/20 = 103/70
In mixed form: 133/70
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