Add 20/45 and 4/7
20/45 + 4/7 is 64/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
4/7 = 4 × 45/7 × 45 = 180/315 - Add the two like fractions:
140/315 + 180/315 = 140 + 180/315 = 320/315 - 320/315 simplified gives 64/63
- So, 20/45 + 4/7 = 64/63
In mixed form: 11/63
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