Add 49/40 and 18/63, Solve 1 9/40 + 18/63 as a fraction

Add 49/40 and 18/63

1^st number: 1 9/40, 2^nd number: 18/63

49/40 + 18/63 is 423/280.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 40 × 63 = 2520,
49/40 = 49 × 63/40 × 63 = 3087/2520
Likewise, for the 2nd fraction, since 63 × 40 = 2520,
18/63 = 18 × 40/63 × 40 = 720/2520
Add the two like fractions:
3087/2520 + 720/2520 = 3087 + 720/2520 = 3807/2520
3807/2520 simplified gives 423/280
So, 49/40 + 18/63 = 423/280
In mixed form: 1143/280

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