Add 12/70 and 21/16, Solve 12/70 + 1 5/16 as a fraction

Add 12/70 and 21/16

1^st number: 12/70, 2^nd number: 1 5/16

12/70 + 21/16 is 831/560.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 16 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 70 × 8 = 560,
12/70 = 12 × 8/70 × 8 = 96/560
Likewise, for the 2nd fraction, since 16 × 35 = 560,
21/16 = 21 × 35/16 × 35 = 735/560
Add the two like fractions:
96/560 + 735/560 = 96 + 735/560 = 831/560
So, 12/70 + 21/16 = 831/560
In mixed form: 1271/560

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