Add 42/7 and 20/45
1st number: 6 0/7, 2nd number: 20/45
42/7 + 20/45 is 58/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
42/7 = 42 × 45/7 × 45 = 1890/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Add the two like fractions:
1890/315 + 140/315 = 1890 + 140/315 = 2030/315 - 2030/315 simplified gives 58/9
- So, 42/7 + 20/45 = 58/9
In mixed form: 64/9
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