Add 42/20 and 54/7
1st number: 2 2/20, 2nd number: 7 5/7
42/20 + 54/7 is 687/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
42/20 = 42 × 7/20 × 7 = 294/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
54/7 = 54 × 20/7 × 20 = 1080/140 - Add the two like fractions:
294/140 + 1080/140 = 294 + 1080/140 = 1374/140 - 1374/140 simplified gives 687/70
- So, 42/20 + 54/7 = 687/70
In mixed form: 957/70
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