Add 40/45 and 4/63
40/45 + 4/63 is 20/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
40/45 = 40 × 7/45 × 7 = 280/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
4/63 = 4 × 5/63 × 5 = 20/315 - Add the two like fractions:
280/315 + 20/315 = 280 + 20/315 = 300/315 - 300/315 simplified gives 20/21
- So, 40/45 + 4/63 = 20/21
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