Add 63/12 and 18/70, Solve 5 3/12 + 18/70 as a fraction

Add 63/12 and 18/70

1^st number: 5 3/12, 2^nd number: 18/70

63/12 + 18/70 is 771/140.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
63/12 = 63 × 35/12 × 35 = 2205/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
18/70 = 18 × 6/70 × 6 = 108/420
Add the two like fractions:
2205/420 + 108/420 = 2205 + 108/420 = 2313/420
2313/420 simplified gives 771/140
So, 63/12 + 18/70 = 771/140
In mixed form: 571/140

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