Add 21/70 and 24/15, Solve 21/70 + 1 9/15 as a fraction

Add 21/70 and 24/15

1^st number: 21/70, 2^nd number: 1 9/15

21/70 + 24/15 is 19/10.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
24/15 = 24 × 14/15 × 14 = 336/210
Add the two like fractions:
63/210 + 336/210 = 63 + 336/210 = 399/210
399/210 simplified gives 19/10
So, 21/70 + 24/15 = 19/10
In mixed form: 19/10

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